TW201538101A - Faceted precious stones - Google Patents

Abstract

A cut precious stone having its crown main facet tier and apavilion main facet tier out of alignment about a central axis is disclosed. The example faceted precious stone comprises a crown portion (C), a girdle (G), a pavilion portion (P) and a base (B). The girdle is intermediate the crown portion and the pavilion portion and the pavilion portion is intermediate the base and the girdle. The crown portion comprises one table facet (TF) and a crown main facet tier that is intermediate the table facet and the girdle, the crown main facet tire consisting of N crown main facets (C1), N being a plural integer number. The pavilion portion comprises a pavilion main facet tier consisting of N pavilion main facets (P2), wherein the N pavilion main facets are radially distributed about a central axis to form a star pattern, the central axis extends through the base and is orthogonal to said table facet or a girdle plane defined by said girdle.

Description

Faceted gemstone

The present disclosure relates to gemstones, and more particularly to faceted gemstones such as cut diamonds.

The surface of the gemstone is usually very ordinary and needs to be cut and polished to become a decorative grade. Gemstone cutting is a highly skilled process that requires artistic skill, knowledge of the science of light, and a combination of professional tools and equipment. The term "gem" generally refers to gemstones such as diamonds, rubies, sapphires and emeralds. A diamond with a refractive index of 2.417 is one of the most valuable stones available.

Faceted cuts of transparent gemstones are known to enhance the brightness of gloss. It would be advantageous to provide a decorative item that would enhance the appearance of the gemstone on the jewel object.

The present invention discloses a cut gemstone having a crown main facet layer and a pavilion main facet layer that are misaligned about a central axis. An exemplary faceted gemstone includes a crown portion (C), a waist (G), a pavilion portion (P), and a base (B). The waist is intermediate the crown portion and the pavilion portion, and the pavilion portion is intermediate the base portion and the waist portion. The crown portion includes a crown mesa (TF) and a crown main facet layer, the crown main facet layer is on the crown table top and the waist In the middle of the part, the crown main facet layer is composed of N crown main facets (C1), and N is a complex integer. The pavilion portion includes a pavilion main facet layer composed of N pavilion main facets (P2), wherein the N pavilion main facets are radially distributed around the central axis to form a star pattern, the central axis A waist plane extending through the base and orthogonal to or defined by the crown deck.

A‧‧‧View direction/direction

B‧‧‧ Base

C‧‧‧Crown section

C1‧‧‧Crown main facet/crown facet/crown main facet/kite-shaped crown main facet

C2‧‧‧crown facet/crown upper facet/crown upper part

C3‧‧‧crown facet/crown upper waist facet/crown upper waist half facet

C4‧‧‧crown facet/crown star facet

C1 _a ‧‧‧ crown main facet

C1 _ai ‧‧‧上上

C1 _b ‧‧‧ crown main facet

C1 _bii ‧‧‧ _上上

D‧‧‧ waist diameter

D _T ‧‧‧ crown table size

H‧‧‧ total height

H _c ‧‧‧Crown height

H _p ‧‧‧ Pavilion height

H _G ‧‧‧Low height

G‧‧‧ Waist

P‧‧‧ Pavilion section

P1‧‧‧The lower part of the pavilion

P2‧‧‧The main facet of the pavilion

P3‧‧‧The lower half facet of the pavilion

P4‧‧‧ pavilion lower waist half facet

P2 _a ‧‧‧Main facet of pavilion

TF‧‧‧ crown table

X‧‧‧ direction

X’‧‧‧ Direction

Y‧‧‧ direction

Y’‧‧‧ Direction

Z‧‧‧ direction

Z’‧‧‧ Direction

X-V-Z‧‧‧ hatching

V‧‧‧ central axis

10‧‧‧Cut Diamond/Semi-Processed Gemstone/Gemstone

12‧‧‧The middle facet of the pavilion

14‧‧‧ central part

16‧‧‧正九形形

18‧‧‧ half facet

22‧‧‧The middle facet of the crown

24‧‧‧ central part

26‧‧‧正九形形

28‧‧‧pentagon facets

100‧‧‧faceted gemstones

200‧‧‧ cut diamonds

300‧‧‧ cut diamonds

400‧‧‧cut diamonds

500‧‧‧ cut diamonds

600‧‧‧ cut diamonds

The disclosure will be described by way of example with reference to the accompanying drawings in which: FIG. 1 is a schematic side elevational view of an exemplary cut diamond according to the present disclosure, and FIG. 2 is a view of the diamond of FIG. Viewing the top plan view of the crown facet and the pavilion facet direction A, FIG. 2A is an enlarged top plan view of a section cut along the direction XVZ of FIG. 2, wherein the V system is formed by the crown table Figure 3 is a top plan view of the diamond of Figure 1 without revealing the facet of the pavilion, and Figure 4 is a bottom plan view of the diamond of Figure 1 without revealing the crown facet, Figure 5A 5H is a schematic view showing the diamond rough cut into the diamond of FIG. 1. FIGS. 6A and 6B are respectively a top plan view and a bottom plan view of an exemplary cut diamond according to the present disclosure, and FIGS. 7A and 7B are respectively according to the present disclosure. a top plan view and a bottom plan view of an exemplary cut diamond of the content, 8A and 8B are top plan views and bottom plan views, respectively, of an exemplary cut diamond according to the present disclosure, and FIGS. 9A, 9B, and 9C are schematic diagrams showing top, bottom, and side views, respectively, of an exemplary cut diamond according to the present disclosure. Top, bottom and side views, and Figures 10A, 10B and 10C are top, bottom and side views, respectively, showing a top, bottom and side schematic view of an exemplary cut diamond according to the present disclosure.

A cut gemstone is disclosed, wherein the crown main facet layer and the pavilion main facet layer are misaligned around the central axis. An exemplary faceted gemstone includes a crown portion (crown C), a waist (G), a pavilion portion (the pavilion P), and a base (B). The waist is in the middle of the crown portion and the pavilion portion, and the pavilion portion is in the middle of the base and the waist. The crown portion includes a crown mesa (TF) and a crown main facet layer, the crown facet layer is located between the crown table top and the waist portion, and the crown main facet layer is composed of N crown main facets ( C1) Composition, N is a complex integer. The pavilion section contains a pavilion main facet consisting of N pavilion main facets (P2). The N pavilion main facets are radially distributed about the central axis to form a star pattern that extends through the base and is orthogonal to the crown mesa or the waist plane defined by the waist.

In some embodiments, the crown main facet layer and its pavilion main facet layer misalign one half of the width of the crown main facet (C1) or one half of the facet facet (P2).

In some embodiments, when each of the crown main facets has a corresponding corresponding paving main facet, the crown main facet layer and the pavilion main facet layer are aligned such that the central axis When viewed in the direction, the radial diagonal is aligned; and wherein the crown main facet layer and the pavilion main facet are out of alignment, so that when viewed in the direction of the central axis, the crown is inscribed The radial diagonal of the face and the radial diagonal of the adjacent facet of the pavilion are offset by an angular displacement of 360°/2N.

In some embodiments, the crown main facet (C1) layer and the pavilion main facet (P2) layer are misaligned by an angular displacement of 360°/2N.

In some embodiments, the crown mesa is an N-sided regular polygon.

In some embodiments, each of the pavilion main facets (P2) is aligned with a corner of the N-sided regular polygon such that a radial diagonal of the respective pavement main facets (P2) is The direction in which the corners intersect intersects.

Referring to Figures 1, 2, 2A, 3 and 4, a faceted gemstone 100 in the form of an exemplary cut diamond 10 includes an exemplary crown portion (crown C ), an exemplary pavilion portion (bottom, also known as a pavilion) P ) and an exemplary waist ( G ). An exemplary crown portion includes a plurality of crown facet layers (crown section layers) and has a characteristic crown height ( _Hc ). The exemplary pavilion portion includes a plurality of pavilion facets (bottom cut layers) and has a feature pavilion height ( _Hp ). The exemplary waist is between the exemplary crown and the exemplary pavilion portion and has a characteristic waist height (H _G ). The waist height is also known as the waist thickness. An exemplary waist is substantially circular and has an average waist diameter (D). The facets on the cut gemstone are geometrically shaped cut and polished faces. Facets are usually but not necessarily planar.

The exemplary crown portion of the exemplary cut diamond of Figure 1 includes a crown mesa (TF) and four crown facets C1, C2, C3, C4. The crown table (TF) is at the top of the diamond and is in the shape of a positive N-sided polygon with a characteristic crown mesa size (D _T ). The characteristic mesa size (D _T ) is usually expressed as a percentage of the waist diameter (D). The four crown facet layers comprise a first crown facet layer (referred to as a crown star facet (C4) layer) and a second crown facet layer (referred to as a crown upper facet (C2) layer) ), the third crown facet layer (referred to as the crown main facet layer (C1)) and the fourth crown facet layer (referred to as the crown upper waist facet (C3) layer or simply "upper waist facet"").

The crown star facet (C4) layer is the crown facet layer closest to the crown table (TF) or farthest from the waist. The crown upper facet (C3) layer is the crown facet closest to the waist or farthest from the crown table (TF). The crown main facet layer (C1) is in the middle of the crown star facet (C4) layer and the crown upper waist facet (C3) layer. The upper chamfer facet (C2) layer is in the middle of the crown main facet layer (C1) and the crown star facet (C4) layer. The crown height (H _c ) is attributed to the sum of the four crown facets. In this exemplary crown portion, the crown height ( _Hc ) is equal to the sum of the heights of the crown main facet (C1) layer and the crown star facet (C4) layer. The crown height (H _c ) is also equal to the sum of the heights of the crown upper chamfer (C2) layer and the crown upper lumbar facet (C3) layer due to the interlacing of adjacent adjoining facets.

The crown main facet (C1) layer contains N crown main facets (crown main lobe C1). The main facet of the crown is also known as the crown slant facet. The N crown main facets have the same shape and size and are distributed around the outer periphery of the diamond in a connected or interlocking manner.

Each crown main facet (C1) has a kite shape and includes an upper half (or simply upper portion) and a lower half (or simply lower portion). Each of the upper or lower half has equal sides or is equilateral. The upper part is close to the crown table and the lower part is close to the waist. The main facet of each crown is inclined at an angle θ _C1 with respect to the plane of the crown mesa. Each crown main facet (C1) is inclined toward the central axis, and the crown main facet (C1) layer is tapered toward the crown table. The crown main facet (C1) is divided into an upper portion and a lower portion by a circumferential diagonal (not visible or not shown) extending between the lateral apexes of the main facet (C1) of the kite-shaped crown. The circumferential diagonal extends in a circumferential direction which is also the direction in which the main facet layer of the crown extends. The circumferential direction is parallel to the general direction of the waist and/or parallel to the plane of the crown mesa.

The crown main facet (C1) is divided into symmetrical lateral halves by a radial diagonal (not visible or not shown) extending between the upper and lower vertices. The upper vertex (or the apex facing the mesa) is on the upper part and close to the crown mesa. The lower apex is on the lower part and is away from the crown table or near the waist. In this example, the lower vertex is on the waist. The radial diagonal extends in a radial direction orthogonal to the diagonal of the circumference.

The equilateral side on the upper portion of the main facet (C1) of the crown is also the equal adjacent side of the oblique facet (C2) of the adjacent adjacent crown. The equilateral side on the lower portion of the main facet (C1) of the crown is the adjacent upper side of the upper facet (C3) of the adjacent adjacent crown. The crown main facet (C1) is arranged such that the crown upper facet (C2) is in the middle of a pair of adjacent crown main facets (C1) and the crown main facet (C1) is in a pair adjacent The middle of the crown is slanted faceted (C2). In other words, the crown main facet (C1) and the crown upper facet (C2) are connected alternately and alternately.

The crown main facet (C1) has a crown facet that is immediately adjacent to the largest facet area of the crown table. The crown main facet (C1) is the facet with the largest facet height or depth on the crown portion. The main facet of the crown contains the kite-shaped facet closest to the waist. The main facet of the crown (C1) is also referred to as the upper face of the upper part of the crown because of its proximity to the waist, and the main facet (C1) of the crown is also referred to as the upper facet of the crown.

When the crown main facet (C1) refers to the upper facet of the crown, for better clarity, the crown upper facet (C3) and the crown upper waist facet can be called crowns respectively. The upper waist half facet (C3) and the upper waist half facet layer.

The upper half of the crown has a 2N crown upper waist half facet (crown waist small flap C3, also known as the upper waist flap). The crown upper waist half facet layer forms a complementary portion between the crown main facet (C1) layer and the waist portion on the crown portion. The upper waist half facet layer is defined by the fit between the crown main facet layer and the waist. Each of the crowns has a triangular half-faceted (C3) triangular shape in which the base of the triangle is formed on the waist. The upper side of the triangle is formed by the lower side of the main facet (C1) adjacent to the adjacent crown. Two adjacent crown upper waist half facets (C3) are associated with the crown main facet (C1). The number of crown upper half facets (C3) in the crown upper half facet (C3) layer is twice the number of the crown main facets (C1) in the crown main facet (C1) layer . The crown upper half facet (C3) has the shape of a right triangle, wherein the beveled edge is defined by the lower edge of the associated crown main facet (C1). The height of the right triangle is limited by the line extending radially between the waist and the junction of the main facets of adjacent crowns. set. 2N upper waist facets are distributed around the outer periphery of the diamond and connected around the main facet (C1) layer of the crown.

The crown star facet layer contains N crown star facets (crown star crest C4). The N crown main facets are of the same shape and size and are distributed around the outer periphery of the diamond in a connected manner to surround the crown table.

Each crown star facet (C4) is in the shape of an isosceles triangle having a base on one of the N sides of the crown mesa and defined by the edge, and the two equilateral sides of the isosceles triangle base Extending toward the waist and merging at a location between the crown table and the waist to define the apex pointing toward the waist. The height of the isosceles triangle extends orthogonally in the radial direction toward the waist. The shape and size of the N crown star facets are the same because the base of the crown star facet (C4) is the side of the regular polygon. Each of the equilateral sides of the crown star facet (C4) defines an upper edge of the upper oblique facet of the crown, and adjacent equal sides of the adjacent crown star facets (C4) define the upper facet of the crown ( C2) Equilateral on the upper part. The slanted facet or upper facet (or upper half) means an equilateral portion that is close to the crown mesa, and the lower part means a portion that is away from the crown mesa or near the base of the diamond.

The coronal facet (C2) layer of the crown comprises N crown slant facets (crown sub-main lobes C2) which are distributed around the outer periphery of the diamond and connected around the crown star facet (C4) layer. The crown star facet (C4) layer is located between the crown upper facet (C2) layer and the crown table (TF). The crown main facet ((C1)) layer contains N crown main facets that are distributed around the outer periphery of the diamond and connected around the upper facet (C2) layer of the crown. The upper chamfer facet (C2) layer is in the middle of the crown main facet (C1) layer and the crown star facet (C4) layer. Crown upper waist facet The (C3) layer is in the middle of the crown main facet (C1) layer and the waist, and is the crown facet layer closest to the waist or farthest from the crown table (TF).

Each of the crown-slanted facets (C2) has a kite shape and includes an upper half (or simply upper portion) and a lower half (or simply lower portion). Each of the upper or lower halves has equal sides or is equilateral. The upper part is close to the crown table and the lower part is close to the waist. The upper oblique facet (C2) of the crown is inclined at an angle θ _C2 with respect to the plane of the crown mesa. The crown upper slant facet (C2) is divided into an upper portion and a lower portion by a circumferential diagonal (not visible or not shown) extending between the lateral apexes of the slant facets (C2) on the kite crown. The circumferential diagonal extends in a circumferential direction which is also the direction in which the oblique facet layer extends over the crown. The circumferential direction is parallel to the general direction of the waist and/or parallel to the plane of the crown mesa.

The crown upper slant facet (C2) is divided into symmetrical lateral halves by a radial diagonal (not visible or not shown) extending between the upper apex and the lower apex. The upper vertex (or the apex facing the mesa) is on the upper part and close to the crown mesa. The lower apex is on the lower part and is away from the crown table or near the waist. In this example, the upper vertex is at the corner of the crown table. The radial diagonal extends in a radial direction orthogonal to the diagonal of the circumference.

In the context of the present invention, the radial direction is the direction defined by reference to the center of the base, the center of the crown mesa or the axis extending between the base and the center of the crown mesa. This axis is generally orthogonal to the plane of the crown mesa and will be referred to as the central axis of the diamond for convenience.

The equilateral sides on the upper portion of the oblique facet (C2) on the crown are also equal adjacent sides of the adjacent crown star facets (C4). Oblique facet on the crown (C2) The equilateral side of the lower portion is the equal adjacent side of the main facet (C1) of the adjacent crown. The crown upper facet (C2) has the same shape and size. The crown upper facet (C2) has the same shape and size and is evenly distributed around the outer periphery of the diamond in a connected manner.

The exemplary crown portion has exemplary angular properties of the following reference to the plane of the crown mesa, wherein the angle value is a slope value relative to the plane of the crown mesa:

The angular inclination can be expressed as an inclination of 90°-θ about the central axis, where θ is the corresponding inclination relative to the plane of the crown mesa. Exemplary dimensional features of an exemplary crown portion are as follows:

An exemplary pavilion portion of an exemplary cut diamond includes four pavilion facets. The four pavilion facets consist of a first pavilion layer (called the pavilion lower waist half facet layer, which contains a plurality of pavilion lower waist half facets (bottom waist half petal P4)), and a second pavilion facet layer (referred to as the lower lumbar oblique facet layer, which comprises a plurality of pavilion lower waist oblique facets (bottom waist full flap P1)), and a third pavilion faceted layer (referred to as the pavilion lower half facet layer, which comprises a plurality of The lower half facet of the pavilion (bottom half flap P3), and the fourth pavilion facet layer (called the pavilion main facet layer, which contains a plurality of pavilion main facet bottom main lobe (P2)).

The main facet of the pavilion contains N pavilions (P2). The main facets (P2) of the N pavilions are the same in shape and size, and are distributed around the periphery of the diamond. The main facet of the pavilion is widened as it extends upward from the base (B) toward the waist portion, and each of the main facets of the pavilion extends upward at the same inclination about the central axis of the diamond. The widening of the main facet of the pavilion defines a generally conical pavilion portion. The main facets of the pavilion extend radially outward at equal radial angular intervals.

Each pavilion main facet (P2) has a kite shape and has an inclination angle θ _P2 with respect to the plane of the crown mesa or an inclination of 90°-θ _P2 around the central axis. Each pavilion main facet (P2) is inclined away from the central axis as it extends upward from the base (B), and the pavement main facet (P2) layer is widened away from the base as a whole. The main facet (P2) of each pavilion includes an upper part (or upper part) and a lower part (or lower part). Each of the upper or lower half has equal sides or is equilateral. The upper portion is close to the waist (or away from the base) and the lower portion is close to the base (or away from the waist). The pavilion main facet (P2) is divided into an upper portion and a lower portion by a circumferential diagonal (not visible or not shown) extending between the lateral apexes of the main facet (P2) of the kite-shaped pavilion. The circumferential diagonal extends in the circumferential direction. The circumferential direction is parallel to the general direction of the waist and/or parallel to the plane of the crown mesa. The pavilion main facet is divided into symmetrical lateral halves by a radial diagonal (not visible or not shown) extending between the lower apex of the lower portion and the upper apex above the upper portion. The radial diagonal is orthogonal to the circumferential diagonal and extends in a radial direction between the lower and upper vertices. The lower apex is on the lower portion of the main facet of the pavilion and is near or near the base. The upper vertex is above the main facet of the pavilion and is close to or close to the waist (G).

The lower part of the main facet of the pavilion includes equal adjacent sides, which extend upward with the lower part in the direction toward the waist and are connected from the lower part of the lower facet of the main facet of the pavilion, and adjacent to the main facet of the adjacent pavilion The lower part shares a common side. The lower portion of the main facet of the pavilion defines the entire outer periphery of the diamond directly adjacent to the base. The upper part of the main facet of the pavilion contains a gradual condensation and forms an equilateral edge of the upper vertex. The upper portions of the main facets of adjacent booths are separated from each other, and the adjacent facets of the pavilions extend radially at equal angular intervals of 360°/N. The main facet of the kiosk of the main facet of the pavilion collectively defines a star pattern centered on the base and includes N star segments extending radially from the base. Since the star pattern has a base as its center, the main facet (P2) layer of the pavilion is the base layer closest to the diamond or the facet layer farthest from the waist or crown table.

The facet length is the length of the radial orthogonal projection on the plane of the crown mesa or the plane defined by the waist. In the example of Figure 1, the pavilion main facet (P2) has a facet length which is one-half or less of the waist diameter. In order to make the star pattern conspicuous, each of the stars defined by the main facet of the pavilion is relatively elongated compared to the other pavilion facets, and the upper portion of the main facet of the pavilion has the appearance of a sharp pointer. The pointer points in the same pointing direction as the direction in which the radial diagonal extends.

The lower half facet of the pavilion contains a plurality of pavilion lower half facets (P3), and the pavilion lower half facet (P3) will complement the spacing between adjacent upper faces of the adjacent pavilion main facets (P2).

The lower half facet (P3) of each pavilion has a triangular shape, wherein the first side of the triangle is formed by one side on the upper part of the pavilion main facet (P2), and the second side of the triangle is used as the main facet of the pavilion. One lower part A line of extensions is formed, the lower edge being on the same side as the upper portion, and the third side of the triangle extending upward from the apex above the main facet of the kiosk toward the waist to intersect the second side of the triangle. The spacing between the adjacent pair of pavilion main facets (P2) is supplemented by a pair of pavilion lower half facets (P3), and the pavilion lower half facet (P3) has mirror symmetry with respect to the line of symmetry. The line of symmetry is an extension of one side of the lower portion of the main facet (P2) of the associated kiosk, and the line of symmetry is also the second side common with the triangle of the lower half facet (P3) of the adjacent pavilion.

Since the lower half facet (P3) of the pavilion complements the main facet layer of the pavilion, the upper part of the main facet (P2) of the pavilion is in the middle of the lower half facet (P3) of the pavilion, and the main facet of the pavilion The upper vertex is the common vertex of the lower half facet (P3) of the pavilion. The third side of the triangle of the lower half facet (P3) of the pavilion is also the lower side of the lower waist facet (P1) of the pavilion in the example of Fig. 1.

The pavilion lower waist facet (P1) layer is located between the pavilion main facet (P2) layer and the waist, and contains N pavilions lower waist bevel facets (P1). The lower waist oblique facet (P1) of the pavilion is distributed around the outer periphery of the pavilion portion between the lower half facet (P3) layer and the waist (G) of the pavilion.

The N pavilion lower waist slant facets (P1) are identical in shape and size and are distributed around the outer periphery of the diamond in a connected manner. The lower waist oblique facet (P1) of each pavilion is inclined away from the central axis as it extends upward, although the lower waist oblique facet (P1) of the pavilion is inclined away from the central axis with a small inclination, that is, compared to the pavilion main The slope of the facet (P2) is steeper.

Each pavilion main facet (P1) has a kite shape and has an inclination angle θ _P1 with respect to the plane of the crown mesa (TF) or an inclination of 90°-θ _P1 around the central axis. The lower waist oblique facet (P1) of each pavilion includes an upper half (or simply upper portion) and a lower half (or simply lower portion). Each of the upper or lower half has equal sides or is equilateral. The upper portion is close to the waist (or away from the base) and the lower portion is close to the base (or away from the waist). The lower waist slant facet (P1) is divided into an upper portion and a lower portion by a circumferential diagonal (not visible or not shown) extending between the lateral apexes of the lower waist slant facet (P1) of the kite-shaped pavilion. The circumferential diagonal extends in the circumferential direction. The circumferential direction is parallel to the general direction of the waist and/or parallel to the plane of the crown mesa. The lower waist slant facet (P1) is divided into symmetrical lateral halves by a radial diagonal (not visible or not shown) extending between the lower apex of the lower portion and the upper apex above the upper portion. The radial diagonal is orthogonal to the circumferential diagonal and extends in a radial direction between the lower and upper vertices. The lower vertex is on the lower portion of the lower lumbar facet (P1) of the pavilion and is near or near the base. The upper vertex is on the upper part of the lower lumbar facet (P1) of the pavilion and is close to or close to the waist (G).

The lower waist slant facets (P1) of the kite-shaped pavilion have the same shape and size, and are equally distributed around the outer periphery of the diamond so that the lower pavement slant facets (P1) of the adjacent pavilions are connected. The width of the lower slant facet (P1) of the pavilion, as defined by its circumferential diagonal, is substantially greater than the corresponding width of the main facet (P2) of the pavilion, which width is also defined by its circumferential diagonal . On the other hand, the height or thickness of the main facet (P2) of the pavilion, as defined by its radial diagonal, is substantially greater than the corresponding height or thickness of the beveled facet (P1) of the pavilion, which height or thickness The same is defined by its radial diagonal. The width and height characteristics are primarily attributed to the elevation of the lower waist slant facet (P1) layer above the pavement main facet (P2) layer, and because the exemplary diamond has a generally conical shape that widens from the bottom toward the waist. So, in this example, The main facet (P2) of the pavilion is sharper, more narrow and/or much finer than the lower facet (P1) of the pavilion. In other words, the pavilion lower waist facet (P1) is much wider (ie, at least twice as large) as the pavilion main facet (P2).

In this example, the pavilion lower waist facet (P1) layer and the pavilion main facet (P2) layer are angularly aligned with their respective radial diagonals aligned in the same radial direction.

The lower half facet (P4) layer of the pavilion is located between the lower facet (P1) layer and the waist (G) of the lower waist of the pavilion. The pavilion lower waist half facet (P4) layer contains 2N pavilion lower waist facets (P4) to complement the spacing between the lower waistline facet (P1) layer and the waist.

The lower half facet (P4) of each pavilion has a triangular shape, wherein the first side of the triangle is one of the equilateral sides on the upper part of the lower waist oblique facet (P1), and the second side of the triangle is the waist and the triangle The third side is the line of symmetry between the lower half-facets (P4) of the two adjacent pavilions, so that the lower pavilion half-facets of the adjacent pavilion defined by the lower pavement slant facet (P1) of the adjacent pavilion (P4) ) is mirror-symmetrical with respect to the line of symmetry. The line of symmetry is also the extension of the line of symmetry between the lower half facets (P3) of adjacent pavilions. This line of symmetry is also an extension of one of the equilateral sides on the lower part of the main facet (P2) of the pavilion.

The exemplary pavilion portion has the following exemplary angular tilt with reference to the crown mesa:

In some exemplary embodiments, the exemplary crown portion and the exemplary pavilion portion combine to form an exemplary diamond having the following exemplary dimensional feature values measured relative to the average waist diameter:

An exemplary diamond has a misaligned pavilion main facet (P2) layer and a crown main facet (C1) layer.

When reference is made to the alignment of the facets in the context of the present invention, the facets are aligned when the facets are angularly aligned. When the facets are aligned, their respective radial diagonals are in a straight line, radially aligned or simply "aligned". When the facets are out of alignment with each other, the corresponding facets are not angularly aligned and the radial diagonals are not straight or "aligned". Since the pavilion portion has a generally conical shape with a characteristic conical axis passing through the center of the diamond and the center of the crown mesa, the angular misalignment can be corrected with reference to the relative angular rotation about the conical axis between alignment and misalignment. The extent of it. When the facets are aligned, they are at a 0° rotation angle, and the angle of rotation gradually increases as the facets gradually move into misalignment. The main facet or the facet facet is a facet with a kite shape, also known as a kite facet. Direction X and X 'and Y and Y indicated by arrows in FIG. 3 and 4 of the' display relative orientation or angular displacement between C1 _a main facets exemplary pavilion main facet exemplary P2 _a crown. 2A, the main facet P2 _a from the crown main facet C1 _{a is from} the upper side C1 _ai and from the adjacent crown, as shown in the enlarged view of the A view direction of FIG. 1 along the section line XVZ. The upper side of the main facet C1 _b is angularly displaced by C1 _bii . V is a central axis extending from the base in the A direction. The A direction is orthogonal to the crown table or waist plane.

In the exemplary cut diamond of Figure 1, there are nine pavilion main facets and N=9 such that the adjacent pavilion main facets are separated by an angular separation of 40° (i.e., 360°/N), where N= The number of facets of the pavilion. The two kite edges of each lower part are also separated by the same angle, ie 40° (ie 360°/N). The nine pavilion main facets form a nine-pronged star pattern that extends radially from the base (B) that is the center of symmetry. The angle of the main facet of the pavilion and the main layer of the crown is misaligned by 360°/2N (ie, 20° in the cone reference system). The misalignment of the 20° angular displacement of the facet means an alignment equal to the width of the facet or half of the lateral extent, wherein there are 9 main pavilions in the main facet of the pavilion, or There are 9 crown main facets in the main facet of the crown. The angular displacement corresponding to the relative displacement of the half width is obtained from the relationship of 360°/2N, where N is the number of the main facet of the pavilion or the main facet of the crown. The width of the main facet or the facet facet is the length of its circumferential diagonal or the distance between its lateral vertices. The height or depth of the main facet or the facet face is the length of its radial diagonal or the distance between its upper and lower vertices.

The half-width displacement between the main facet of the pavilion and the main layer of the crown has been shown to be exceptionally different from conventional diamonds.

The exemplary 8-layer diamond of Figure 1 has a total of 100 facets consisting of 46 facets on the crown including the crown table and 54 facets on the pavilion. The waist can be sanded, smooth polished or faceted, and the facets on the waist are usually excluded from the total facet count. An exemplary diamond will have 101 facets if there is a pointed bottom facet.

An exemplary process for forming the exemplary cut diamond of FIG. 1 will be explained with reference to FIGS. 5A through 5H.

The semi-finished gemstone 10 having a circular profile is machined such that its lower portion is cut into nine pavilion intermediate facets 12 around the central portion 14 . The nine pavilion intermediate facets 12 define a central portion 14 at one of the elevations above the base, and the central portion 14 has the contour of a regular nine-sided 16 . As shown in FIG. 5A, the nine pavement intermediate facets are connected in the same shape, size and inclination, and extend downward from the waist ( G ) with a uniform inclination around the central axis. The portion of the gemstone 10 that is below the regular hexagon 16 is cut into nine half facets 18 . Each of the half facets is an isosceles triangle in which one of the sides of the regular hexagon 16 forms a base. As shown in FIG. 5B, the nine half facets are connected in the same shape, size, and inclination, and extend downward from the regular hexagon 16 at a uniform inclination about the central axis to merge at the base. Then, as shown in FIG. 5C, a pavilion main facet (P2) and a pavilion lower half facet (P3) are formed. Next, as shown in FIG. 5D, the lower waist portion of the pavilion (P1) and the lower half of the pavilion (P4) complete the formation of the pavilion (P).

The portion of the semi-machined gemstone 10 above the waist ( G ) is cut into nine crown intermediate facets 22 around the central portion 24 . The nine crown intermediate facets 22 define a central portion 24 at an elevation above the waist ( G ), and the central portion 24 has the contour of a regular nine-sided 26 . As shown in Fig. 5E, the nine crown intermediate facets 22 are connected in the same shape, size and inclination, and extend upward from the waist (G) with a uniform inclination about the central axis. Next, as depicted in Figure 5F, a pentagon facet 28 is formed at each corner joint between the regular nine-sided 26 and the crown intermediate facet 22 . Each pentagonal facet center of the base 28 adjacent to the central portion 24, and its apex is located adjacent the waist portion intermediate the crown facets, one edge 22, and the intermediate crown facets 22 of the side of its axis of symmetry is also laterally. As shown in Fig. 5F, the nine pentagon facets 28 are connected in the same shape, size and inclination, and extend upward from the waist ( G ) with a uniform inclination about the central axis. The base of the pentagon facet 28 is joined to define a crown mesa (TF). Next, as shown in FIG. 5G, a crown main facet (C1) layer and a crown star facet (C4) layer are formed. Next, as shown in FIG. 5H, a crown chamfered face (C2) layer and a crown upper waist facet (C3) layer are formed to complete the formation of the crown portion.

An exemplary cut diamond 200 having the exemplary crown and pavilion configuration of FIG. 1 is illustrated in FIGS. 6A and 6B. An exemplary cut diamond has a weight of 0.48 carats (ct) and the following angular and dimensional properties:

Another exemplary cut diamond 300 having the exemplary crown and pavilion configuration of FIG. 1 is illustrated in FIGS. 7A and 7B. An exemplary cut diamond has a weight of 0.503 carats (ct) and the following angular and dimensional properties:

Another exemplary cut diamond 400 having the exemplary crown and pavilion configuration of FIG. 1 is illustrated in FIGS. 8A and 8B. An exemplary cut diamond has a weight of 0.438 carats (ct) and the following angular and dimensional properties:

While cut diamonds having the above eight faceted layer arrangements typically provide high yield or utilization, cut diamonds having a smaller number of faceted layers may also be used or preferred.

Referring to Figures 9A, 9B, and 9C, a faceted gemstone in the form of an exemplary cut diamond 500 includes: an exemplary crown portion ( C ) having a crown mesa and three crown facets; an exemplary kiosk a portion having two pavilion facets; and an exemplary waist ( G ).

The crown table (TF) is at the top of the diamond and is in the shape of a positive N-sided polygon with a characteristic crown mesa size (D _T ). The three crown facet layers are: a first crown facet layer, which is a crown star facet (C4) layer; and a second crown facet layer, which is a crown main facet (C1) layer And a third crown facet layer, which is the upper waist facet (C3) layer of the crown. The first crown facet layer is adjacent to the crown table, the third crown facet layer is away from the crown table, and the second crown facet layer is intermediate the first crown facet layer and the third crown facet layer. The two pavilion facets are: the first pavilion facet layer, which is the pavilion main facet (P2) layer; and the second pavilion facet layer, which is the pavilion lower waist half facet (P4) Floor. The first pavilion facet layer is adjacent to the base and the second pavilion facet layer is remote from the base. An exemplary diamond has a misaligned pavilion main facet (P2) layer and a crown main facet (C1) layer.

The crown star facet layer contains N crown star facets (C4), the crown main facet layer contains N crown main facets (C1), and the crown upper waist facet layer contains 2N crowns The upper part of the waist is faceted (C3). Description of each of the crown star facet, the crown main facet and the crown upper facet, the crown star facet, the crown face facet, and the crown upper facet The same as the description of the example of Fig. 1, except that there is no oblique facet (C2) on the crown and a facet facet on the crown. Descriptions of various crown facets and facets may be incorporated herein and incorporated with the necessary modifications, but exclude the upper facet (C2) of the crown and the upper facet of the crown. In detail, the equilateral sides above the upper part of the crown facet (C1) form two adjacent equilateral sides of the adjacent crown star facets.

The exemplary crown portion of the exemplary cut diamond of N=8 of Figure 9A has the following exemplary angular properties with reference to the plane of the crown mesa, where the angle value is the slope value relative to the plane of the crown mesa:

The angular inclination can be expressed as an inclination of 90°-θ about the central axis, where θ is the corresponding inclination relative to the plane of the crown mesa. Exemplary dimensional characteristics of an exemplary crown portion are as follows:

The pavilion main facet layer contains N pavilion main facets (P2), and the pavilion lower waist facet layer contains 2N pavilion lower waist half facet (P4) layers. Similarly, each of the crown star facet, the crown main facet and the crown upper facet, the crown star facet layer, the crown main facet layer, and the crown upper waist facet layer The description of the person is the same as that of the example of Fig. 1, except that there is no crown chamfering face (C2) and a crown overlying facet layer. The description of the various crown facets and facets is incorporated herein and incorporated by the necessary modifications, but the upper facet (C2) of the crown and the upper facet of the crown are excluded. In detail, the equilateral sides above the upper part of the crown facet (C1) form two adjacent equilateral sides of the adjacent crown star facets.

The exemplary pavilion portion of the exemplary cut diamond of Figure 9B having N = 8 has the following exemplary angular tilt and dimensional characteristics of the reference crown deck:

In the exemplary cut diamonds of Figures 9A, 9B and 9C, the pavilion main facet consists of 8 pavilion main facets (P2) to form a 8-fork extending radially from the base ( B ) as the center of symmetry. The star-shaped pattern, and the crown main facet consists of 8 crown main facets (C1). The main facet of the pavilion and the main layer of the crown are misaligned by an angular displacement of 22.5°, that is, an angular displacement of 360°/2N based on the central axis in the cone reference system.

In the exemplary cut diamond 600 of Figures 10A, 10B, and 10C, the pavilion main facet layer is composed of nine pavilion main facets (P2) to form a radial extension from the base (B) as a center of symmetry. A fork-shaped star pattern, and the crown main facet layer is composed of 9 crown main facets (C1). The main facet of the pavilion and the main layer of the crown are misaligned by an angular displacement of 20°, that is, an angular displacement of 360°/2N based on the central axis in the cone reference system.

Although a faceted gemstone has been exemplified, the cut diamond is merely an example and should not be used to limit the scope of the disclosure. For example, a cut diamond according to the present disclosure may comprise a crown portion according to any example for combination with a pavilion that is also according to any example. For example, a 4-layer crown portion can be combined with a 2-, 3-, or 4-layer pavilion portion, and a 3-layer crown can be combined with a 2-, 3-, or 4-story pavilion portion, and the main crown is faceted. The number N of the main crown facets in the middle may be 8 or more. For example, for a diamond of about 0.5 carat, the number N can be 8 or 9. For larger diamonds, N can be greater than 8 or 9, and the total number of faceted layers can be greater than 8 without loss of generality.

Although the present disclosure has been described herein with reference to the examples, the examples are not intended to be construed as limiting the scope of the disclosure.

A‧‧‧View direction/direction

B‧‧‧ Base

C‧‧‧Crown section

C1‧‧‧Crown main facet/crown facet/crown main facet/kite-shaped crown main facet

C2‧‧‧crown facet/crown upper facet/crown upper part

C3‧‧‧crown facet/crown upper waist facet/crown upper waist half facet

C4‧‧‧crown facet/crown star facet

H‧‧‧ total height

H _c ‧‧‧Crown height

H _p ‧‧‧ Pavilion height

H _G ‧‧‧Low height

G‧‧‧ Waist

P‧‧‧ Pavilion section

P1‧‧‧The lower part of the pavilion

P2‧‧‧The main facet of the pavilion

P3‧‧‧The lower half facet of the pavilion

P4‧‧‧ pavilion lower waist half facet

10‧‧‧Cut Diamond/Semi-Processed Gemstone/Gemstone

100‧‧‧faceted gemstones

Claims (28)

A faceted gemstone comprising: a crown portion (C), a waist portion (G), a pavilion portion (P), and a base portion (B); wherein the waist portion is intermediate the crown portion and the pavilion portion, and The pavilion portion is intermediate the base portion and the waist portion; wherein the crown portion includes a crown mesa (TF) and a crown main facet layer, wherein the crown main facet layer is between the crown mesa and the waist portion The crown main facet layer comprises N crown main facets (C1), N is a complex integer; wherein the pavilion part comprises a pavilion main facet layer comprising N pavilions main facets (P2), The N pavement main facets are radially distributed about the central axis to form a star pattern extending through the base and orthogonal to the crown mesa or a waist plane defined by the waist; and wherein the crown The main facet layer and the main facet layer of the pavilion are misaligned around the central axis. The faceted gemstone of claim 1, wherein the crown main facet layer and the main facet layer of the pavilion are misaligned by half the width of the main facet (C1) of the crown or half of the main facet (P2) of the pavilion. width. A faceted gemstone according to any of the preceding claims, wherein the crown main facet is provided when each of the crown main facets has an aligned pavilion main facet The layer and the pavement main facet layer are aligned such that when viewed in the direction of the central axis, the radial alignment is aligned; and wherein the crown main facet layer and the pavilion main facet layer Misalignment, such that when viewed in this direction of the central axis, the radial diagonal of the main facet of the crown and the radial diagonal of the adjacent facet of the pavilion are offset by an angle of 360°/2N Displacement. A faceted gemstone according to any of the preceding claims, wherein the crown main facet (C1) layer and the pavilion main facet (P2) layer are misaligned by an angular displacement of 360°/2N. A faceted gemstone according to any of the preceding claims, wherein the crown mesa is an N-sided regular polygon, and each of the kiosk main facets (P2) is aligned with a corner of the N-sided regular polygon such that The radial diagonal of each of the pavilion main facets (P2) extends in a direction intersecting the corners. A faceted gemstone according to any of the preceding claims, wherein the crown mesa is an N-sided regular polygon, and the crown main facet layer is arranged such that the radial direction of each crown main facet (C1) The diagonal extends in a direction that intersects the sides of the N-sided regular polygon and is divided into two equal portions. A faceted gemstone according to any of the preceding claims, wherein the crown main facet (C1) layer and the pavilion main facet (P2) layer are arranged to be misaligned such that the crown main facet ( The radial diagonal of C1) is aligned with the side of the main facet of the corresponding pavilion, and the radial diagonal of the other crown main facet (C1) adjacent to the main facet (C1) of the crown Align with the other side of the main facet of the corresponding pavilion. A faceted gemstone according to any of the preceding claims, wherein the crown portion comprises a crown star facet layer comprising N crown star facets (C4) And a crown upper waist half facet layer comprising 2N upper waist half facets (C3), the crown star facet layer being in the middle of the crown main facet layer and the crown mesa, and the upper waist half a facet layer is adjacent to the waist and intermediate the crown facet layer and the waist; and wherein each of the crown main facets (C1) has the same angle of inclination about the central axis, the angle being between 38.5 and 44 degrees between. The faceted gemstone of claim 8, wherein the crown star facet (C4) has the same angle of inclination about the central axis and the angle is between 17-26 degrees. A faceted gemstone according to claim 8 or 9, wherein the crown upper waist half facet (C3) has the same angle of inclination about the central axis and the angle is between 46 and 54 degrees. A faceted gemstone according to any one of claims 8 to 10, wherein the crown comprises a crown facet (C4) layer, a crown facet (C1) layer and a crown upper waist Three crown facet layers consisting of a half facet (C3) layer; and wherein the crown table has a crown mesa size equal to between 56-62% of the average waist diameter. The faceted gemstone of claim 11, wherein the crown portion has a crown height equal to between 13.5-15.5% of the average waist diameter. A faceted gemstone according to any of the preceding claims, wherein the crown portion further comprises a crown-slanted facet layer comprising N crown-slanted facets (C2), the crown-slanted facet layer Between the crown main facet layer and the crown star facet layer; and wherein the crown upper facet (C2) has There is the same angle of inclination around the central axis, and the angle is between 25-34 degrees. The faceted gemstone of claim 13, wherein the crown mesa has a crown mesa size equal to between 48-55% of the average waist diameter. A faceted gemstone according to claim 13 or 14, wherein the crown portion has a crown height equal to between 18-23% of the average waist diameter. A faceted gemstone according to any of the preceding claims, wherein each of the main crown facets (C1) is interposed between a pair of adjacent crowns on the waist half facet (C3), each crown starring The face (C4) has a triangular shape and has a base on one side of the crown mesa (TF), and each crown upper waist half facet (C3) has a triangular shape and has a base on the waist. A faceted gemstone according to any of the preceding claims, wherein the pavilion portion comprises a pavilion lower waist half facet layer comprising 2N pavilion lower waist half facets (P4); wherein the pavilion main facet (P2) The layer is the pavilion facet layer closest to the base, and the pavilion lower waist half facet layer is the pavilion facet layer closest to the waist, and each of the pavilion main facets (P2) has a triangular shape and has The base on the waist. A faceted gemstone according to any of the preceding claims, wherein the pavilion main facet (P2) has the same angle of inclination about the central axis and the angle is between 39.5 and 42 degrees. A faceted gemstone according to any of the preceding claims, wherein the pavilion portion comprises the pavilion main facet (P2) layer and the kiosk lower waist half facet (P4) layer, the pavilion portion having an average waist Pavilion between 42-45% in diameter a height of the portion; and wherein each of the pavilion main facets (P2) has the same angle of inclination widened about the central axis, and the angle is between 39.5 and 42 degrees; and the lower waist half facet (P4) has The same angle of inclination around the central axis, and the angle is between 40.5 and 43.5 degrees. The faceted gemstone of any one of claims 1 to 17, wherein the pavilion portion further comprises a pavilion lower facet layer comprising N pavilion lower facets (P1) and a lower half facet comprising 2N pavilions (P3) The lower half facet of the pavilion, the lower facet (P1) layer of the pavilion is in the middle of the main facet (P2) layer of the pavilion and the lower half facet (P4) layer of the pavilion, and the lower half of the pavilion The facet layer is located between the main facet layer of the pavilion and the lower facet layer of the pavilion; and wherein the pavilion lower facet layer (P1) and the pavilion main facet layer (P2) are aligned. The faceted gemstone of claim 20, wherein each of the kiosk main facets (P2) has the same angle of inclination about the central axis and is expanded, and the angle is between 39 and 41 degrees; and the lower The slant facet (P1) has the same angle of inclination about the central axis and is expanded between 53-56 degrees; and wherein the pavilion portion has a kiosk between 45-52% of the average waist diameter Department height. The faceted gemstone of claim 20 or 21, wherein the lower half facets (P3) of the pavilions have the same angle of inclination about the central axis, and the angle is between 40 and 43 degrees; and the lower waist portions The half facet (P4) has the same angle of inclination about the central axis and the angle is between 60 and 66 degrees. A faceted gemstone according to any of the preceding claims, wherein the crown main facet layer comprises 9 crown main facets, and the pavilion main facet layer comprises 9 The main facet of the pavilion, and wherein the main facet of the pavilion and the main facet of the crown are rotated by 20°. The faceted gemstone of claim 23, wherein the gemstone comprises 4 crown facets and 4 pavilion facets and 100 facets. A faceted gemstone according to any of the preceding claims, wherein the crown main facet layer comprises 8 crown main facets, and the kiosk main facet layer comprises 8 kiosk main facets, and wherein The main facet of the pavilion and the main facet of the crown are rotated by 22.5°. A faceted gemstone according to claim 23 or 24, wherein the gemstone comprises 4 crown facet layers and 4 pavilion facets and weighs 1 carat or less. A faceted gemstone according to any of the preceding claims, wherein N is an integer equal to or greater than 8. A faceted gemstone according to any of the preceding claims, wherein the gemstone is a cut diamond.