RU2689879C2 - Faceted precious stone and article containing such precious stone - Google Patents

Abstract

FIELD: jewelry.SUBSTANCE: disclosed is a faceted precious stone comprising girdle (3) having four gondier sides (2) and girdle tips (1), platform (4) formed by a flat face, crown (7), which is located between platform (4) and girdle (3) in first direction (H), and crown (13), which is located in second direction (B), opposite to first direction (H), between said girdle (3) and stud (14) of rim. According to invention in proposed jewel crown (7) contains twenty four faces, rim (13) contains thirty-two faces, and four sides of girdle (3) are identical in form of circular arc, concavity of which is directed outside of precious stone.EFFECT: cut faceted precious stone is proposed.12 cl, 3 dwg

Description

The invention relates to faceted gems and articles containing such gems.

In particular, it concerns improvements applied to faceted gemstones so that they have optical reflectance characteristics that are better than those obtained for a gemstone cut, called "Princess", in order to get a more expressive brilliance.

From US Pat. No. 8,181,482, a gemstone is cut, cut in the "Princess" type and resembling a butterfly shape. The faceted gem described in this document contains:

- the girdle having four sides of the girdle and four tops of the girdle,

- a platform formed by a flat face,

- the crown, which is located between the platform and the girdle in the first direction,

- and the nimbus, which is located in the second direction, opposite to the first direction, between the specified girdle and the nimbus spike.

The objective of the invention is to develop an alternative faceted gemstone, which has an extremely expressive brilliance.

The task is solved in a faceted gem of the above type, in which the crown contains twenty-four faces, the rim contains thirty-two faces, and the four sides of the girdle are identical in the form of an arc of a circle, the concavity of which is directed outward of the gemstone.

The gem thus produced has a more pronounced brilliance than the gem described in US document 8 181 482.

According to the invention, the gem can also have the following distinctive features, considered separately or in combination.

In particular, the crown may contain:

- four corner edges of the site, located in the four corners of the site,

- four sides, with each of the four sides of the crown contains:

- at least one wedge,

- the first face of the star of the crown, located between the wedge and the first corner face of the site, and

- the second face of the star of the crown, located between the wedge and the second corner face of the site.

In this embodiment, the twenty-four faces of the crown include four side faces, four bezels, four wedges, eight faces of a star, and four corner edges of the platform.

In addition, according to the embodiment that will be described below, an exceptionally expressive brilliance is obtained with a faceted gemstone in which:

- the site is inscribed in the plane of the site,

- each bezel is inscribed in the plane of the bezel,

while the plane of the bezel is inclined relative to the plane of the platform at an angle, essentially comprising from 35 to 39 °.

As for the corolla, it may contain:

- four halo pavilions,

- the star of the corolla, containing four faces of the star of the corolla, connecting the spike of the corolla and the tops of the girdle, and

- at least three halo shutters located on each side of each face of the halo star between the edge of the halo star and one pavilion among the four pavilions mentioned.

In this embodiment, the thirty-two edges of the halo may include four halo pavilions, four edges of the halo star, and twenty-four halo halves.

In addition, according to the embodiment that will be presented below, an exceptionally expressive brilliance is obtained by means of a faceted gemstone in which:

- the site is inscribed in the plane of the site,

- each pavilion is inscribed in the pavilion plane,

and in which each plane of the pavilion has an inclination relative to the plane of the platform at an angle essentially comprising from 58 to 62 °.

For even better brilliance, a cut gem can be made with the following features:

- each side of the girdle has a girdle side length, which is the shortest distance between two adjacent girdle tops,

- the specified star of the corolla has a square base near the spike of the corolla,

and in which the base of the square section has a diagonal, the length of which is essentially from 5 to 11% of the length of the girdle side, preferably from 5.5 to 10.5%.

A faceted gem may also have the following distinguishing features:

- each side of the girdle has a girdle side length, which is the shortest distance between two adjacent girdle tops,

- each side of the girdle has a maximum depth, measured perpendicular to the straight line connecting the two adjacent girdle tops,

and in which the specified maximum depth is essentially from 5.5 to 9.5 of said side length of the girdle.

In addition, a faceted gem may have the following distinguishing features:

- each side of the girdle has a girdle side length, which is the shortest distance between two adjacent girdle tops,

- the platform has eight peaks of the platform, among which the four peaks of the platform also form the vertices of the corners of the platform, and four other peaks alternating with the vertices of the corners of the platform also form the vertices of the wedge,

and in which the distance between the top of the wedge and the straight line connecting the two adjacent vertices of the girdle, perpendicular to this straight line, is essentially from 18 to 22% of the specified length of the girdle side.

According to an embodiment of the invention, the gem is a diamond.

The invention also relates to a jewel containing at least one gem described above.

The invention set forth quite clearly and fully in the following description, which is presented with reference to the drawings.

FIG. 1 shows a gemstone according to a preferred embodiment of the invention, top view;

in fig. 2 shows the precious stone shown in FIG. 1, bottom view;

in fig. 3 shows the precious stone shown in FIG. 1 and 2, side view.

In the following description text, the terms "lower", "upper", "upper", "lower", etc. apply regarding drawings for better understanding. They should not be construed as limiting the scope of protection of the invention.

The jewel shown in FIG. 1–3, made of diamond using the “Princess” cut (that is, a diamond, whose overall shape resembles a pyramid with a square base). However, the person skilled in the art can perform the following cut on other precious or semi-precious stones.

In the following description, the upper part of the gem will first be presented, that is, the part of the gem that is usually facing outward of the jewelry when the gem is attached to the jewelry. It is part of a gemstone directly visible to the observer.

The upper part of the gemstone usually contains a platform of the gemstone, formed by a flat face, and a crown surrounding the area and formed by several adjacent faces. The crown is located essentially in the first direction H (see Fig. 3).

The lower part of the gemstone located on the opposite side and facing the jewel is called the bezel of the gemstone. The rim passes in the direction B opposite to the direction H, and will be described below with reference to FIG. 2

FIG. 1 shows a top view of the claimed gemstone, i.e., the upper part of the gemstone is shown, which has a common square shape.

The widest part of the gem that defines its diameter is called a “girdle”: thus, the gem shown in the figures has a girdle 3 of essentially square shape, which has four vertices 1 (hereinafter called the girdle tops), interconnected by four sides 2 girdle the same length.

As shown in FIG. 1, each of the four sides 2 of the girdle has the shape of a (concave) arc, the concavity of which is facing outward of the gemstone.

FIG. 3 shows the side 2 of the girdle 3 of a precious stone, while the girdle 3 is schematically represented in FIG. 3 in the form of a dashed line between the two vertices of one girdle.

In the center of the upper part of the gemstone shown in FIG. 1, there is an octagonal platform 4. Four of the vertices of the octagonal platform 4 are in line with the vertices 1 of the girdle along the diagonal D1 or D2 of the girdle and form the vertices of the 5 corner of the platform. The other vertices of the platform 4 alternate with the vertices 5 of the corner of the platform and form the vertices 6 of the wedge.

Each side 2 of the girdle has a length L of the side of the girdle, which is the shortest distance between two adjacent vertices 1 of the girdle,

Each of the 6 wedge vertices is at equal distance from two adjacent vertices of one girdle. The position of the wedge apex 6 is selected on the straight line D4, which is perpendicular to the straight line D3 connecting two girdle 1 tops and passing through the center of the C segment connecting two girdle tops 1. The distance L1 between the center C and the top 6 of the wedge is chosen so that it essentially constitutes from 18 to 22% of the length L of the side 2 of the girdle.

In the example shown in FIG. 1, the distance L1 between the center C and the wedge apex 6 essentially corresponds to 20% of the length L between two vertices 1 of the girdle.

The depth L2 of the concavities of the sides 2 of the girdle is also chosen depending on the shortest length L between the two vertices 1 of the girdle (see Fig. 1).

The depth L2 essentially ranges from 5.5 to 9.5% of the length L of the side 2 of the girdle (see FIG. 1).

Between the pad 4 and the sides 2 of the girdle 3 there is a crown 7 of a precious stone (see Fig. 1 and 3).

In the example shown in the figures, the crown 7 contains four side edges 8, which correspond to four edges in accordance with the curvature profile of the sides 2 of the girdle (see Fig. 3).

In the four corners of the site 4, crown 7 contains four corner faces 9 of the site of essentially diamond shape, one of the peaks of which is formed by the top 5 of the corner of the platform, and the opposite top is formed by the top 1 of the girdle. Two other vertices of the corner faces 9 of the platform are indicated in FIG. 1 letter T.

The crown also contains four bezels 10, formed by faces made between two adjacent vertices 1 of the girdle and two vertices T of adjacent corner faces of the 9th platform, corresponding to two adjacent and considered vertices 1 of the girdle.

The slope of the bezel relative to the plane of the pad 4 is such that the plane P1 of the bezel forms an angle α with the plane P2 in which the pad 4 is inscribed, and the angle α ranges from 35 to 39 ° (essentially 37 ° in the framework of the example shown in Fig. 3 ).

Crown 7 also contains four triangular faces, called wedges 11, located between the bezels and pad 4 and having two vertices T as vertices (common with bezels 10) and wedge vertex 6 (common with pad 4).

Finally, between the four corner corners of the 9th platform, the platform 4 and the wedges 11, the crown contains eight edges of 12 stars, each triangular in shape, so called because they form a star around the platform 4.

The claimed gemstone, made in such a way and shown in figures, contains crown 7, which has a total of twenty-four faces.

Next, with reference to FIG. 2 follows the description of the corolla of the claimed gemstone.

The corolla 13 contains a spike 14 of the corolla 14 and passes between the girdle 3 and the said spike 14 of the corolla 14. Since the girdle 3 has a substantially square shape, the rim 13 has essentially a pyramid shape, the base of which has a square shape.

The corolla 13 contains a star of the corolla 15, which contains four branches connecting the spike 14 of the corolla and each of the girdle 1s of each girdle. The four branches of the corolla star are called the “faces of the 16 corolla stars”.

Each of the branches has a wide base 17 and a tapered top in the form of a spike 18, which connects to the top of the girdle. The wide bases 17 of the four faces of the 16 corolla stars form four imaginary sides of a square (shown by a dashed line), the center of which is formed by the rim of the 14 corolla 14 (see Fig. 2).

In other words, near the thorn 14 of the corolla, the star of the corolla 15 has a base of 19 square section.

According to the distinctive feature of the claimed gemstone, the base 19 has a diagonal of 20, the length of which is from 5 to 11% of the length L of the girdle side, preferably from 5.5 to 10.5%. In this example, the length of the diagonal 20 is essentially equal to 8% of the length L.

In addition to the star 15 corolla, the corolla 13 contains four pavilions 21 of the corolla adjacent to the side faces 8.

Each pavilion 21 of the corolla is formed by a flat face with three sides: the first side 22 is curved and is common with the side of the side face 8. The second and third sides 23 and 24 have the same length, and each of the second and third sides connects the top 1 of the girdle to the point 25 located on the line on which there is a diagonal of 20.

The position of point 25 on the straight line, on which diagonal 20 is located, is determined by the orientation of the pavilion's plane P3 relative to the plane P2 of the platform 4: according to the invention, the angle β of the inclination of the plane P3 relative to the plane P2 is essentially 60 ° (plus or minus 2 ° - see FIG. 3).

Between the pavilion 21 of the corolla 21 and the face of the 16th corolla star there are three edges 26 of the corolla shutter.

Each edge 26 of the rim of the rim has a triangular shape with a base 27 located on a straight line on which there is a diagonal of 20, and with two sides connecting the base 27 with the apex 1 of the girdle.

Thus, the three halo shutters 26 have three bases 27, aligned in a straight line, on which are the diagonal 20 and point 25. In accordance with the position of the halo shutter 26, it also contains a side common to the edge of the 16 halo star or the halo pavilion 21, or does not have any common side, if the edge 26 of the shutter of the corolla is located between two other faces 26 of the shutter of the corolla.

In total, rim 13 contains twenty-four edges of the rim shutter 26, having a base 27, which is common to two edges of the rim shutter 26, which are a display of each other with axial symmetry, the axis of which corresponds to the straight line on which diagonal 20 is located.

The gem thus executed and shown in the figures contains thirty-two faces, including twenty-four faces, 26 halo closures, four pavilions 21, and four faces of the 16 halo stars.

The invention is not limited to the gem described above. It can be used for any jewelry product that contains at least one of the precious stones described above and represented in the figures.

Claims (40)

1. A faceted gemstone containing: - a girdle (3) having four sides (2) of the girdle and four vertices (1) of the girdle, - platform (4) formed by a flat face, - the crown (7), which is located between the platform (4) and the girdle (3) in the first direction (N), and - a nimbus (13), which is located in the second direction (B), opposite to the first direction (H), between the specified girdle (3) and the tenon (14) of the nimbus, characterized in that the crown (7) contains twenty-four faces, the rim (13) contains thirty-two faces, and the four sides (2) of the girdle (3) are identical in the form of an arc of a circle, the concavity of which is directed outward of the gemstone. 2. A faceted gem under item 1, in which the crown (7) contains: - four corner faces (9) of the site, located in the four corners of the site (4), - four sides, with each of the four sides of the crown contains: - at least one wedge (11), - the first face (12) of the star of the corona, located between the wedge (11) and the first corner face (9) of the site, and - the second face (12) of the star of the corona, located between the wedge (11) and the second corner face (9) of the site. 3. The faceted gem of claim 2, in which the twenty-four faces of the crown (7) include four side faces (8), four bezels (10), four wedges (11), eight faces (12) stars, and four corner edges (9) of the site. 4. A faceted gem according to claim 3, in which: - the platform (4) is inscribed in the plane (P2) of the platform, - each bezel (10) is inscribed in the plane (Р1) of the bezel, while the plane (P1) of the bezel has an inclination relative to the plane (P2) of the platform at an angle (α), essentially comprising from 35 to 39 °. 5. Faceted gem according to any one of paragraphs. 1–4, in which the specified rim (13) contains: - four pavilions (21) corolla, - a star (15) of the corolla, containing four edges (16) of the star of the corolla, connecting the spike (14) of the corolla and the tops (1) of the girdle (3), and - at least three shutters (26) of the halo, located on each side of each face (16) of the halo star, between the face (16) of the halo star and one pavilion (21) of the four pavilions (21). 6. A faceted gem according to claim 5, in which said thirty-two edges of the corolla (13) include four pavilions (21) of the corolla, four edges (16) of the corolla stars, and twenty-four shutters (26) of the corolla. 7. Faceted gem according to any one of paragraphs. 5 or 6, in which: - the platform (4) is inscribed in the plane (P2) of the platform, - each pavilion (21) is inscribed in the plane (P3) of the pavilion, at the same time, each plane (P3) of the pavilion has an inclination relative to the plane (P2) of the site at an angle (β), essentially comprising from 58 to 62 °. 8. Faceted gem according to any one of paragraphs. 5-7, in which: - each side (2) of the girdle has a length (L) of the girdle side, which is the shortest distance between two adjacent vertices (1) of the girdle, - the specified star (15) of the corolla has a base (19) of square section near the spike (14) of the corolla, the base (19) of square section has a diagonal (20), the length of which is essentially from 5 to 11% of the length (L) of the girdle side. 9. Faceted gem according to any one of paragraphs. 1–8, in which: - each side (2) of the girdle has a length (L) of the girdle side, which is the shortest distance between two adjacent vertices (1) of the girdle, - each side (2) of the girdle has a maximum depth (L2), measured perpendicular to the straight line connecting the two adjacent vertices (1) of the girdle, however, the specified maximum depth (L2) is essentially from 5.5 to 9.5% of the specified length (L) of the side of the girdle. 10. Faceted gem according to any one of paragraphs. 1–9, in which: - each side (2) of the girdle has a length (L) of the girdle side, which is the shortest distance between two adjacent vertices (1) of the girdle, - the platform (4) has eight peaks (5.6) of the platform, among which the four peaks of the platform also form the peaks (5) of the corners of the platform, and four other peaks alternating with the peaks (5) of the corners of the platform, also form the peaks (6) of the wedge , the distance (L1) between the top (6) of the wedge and the straight line connecting the two adjacent vertices (1) of the girdle, perpendicular to this line, essentially ranges from 18 to 22% of the specified length (L) of the girdle (2). 11. Faceted gem according to any one of paragraphs. 1–10, while the gem is a diamond. 12. Jewelry containing at least one gem according to any one of paragraphs. 1–11.

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