CN110772001A - One hundred-facet round cut diamond and processing method thereof - Google Patents

Abstract

The invention discloses a one-hundred-facet round cut diamond and a processing method thereof. A one hundred-facet round cut diamond includes a crown, a pavilion, and a girdle; the waist part is circular, is positioned between the crown part and the pavilion part and is used for connecting the crown part and the pavilion part; the diamonds are arranged in a rotational symmetry manner. The one-hundred-facet round cut diamond with the crown showing the peony effect provided by the invention can be used for making the diamond with the peony effect seen from the crown by changing the cutting parameters of the existing round cut diamond. The crown part and the pavilion part of the diamond are perfectly symmetrical, and the light leakage points of the diamond are reduced through specific angle combination, so that a large number of bright light reflection and a perfectly symmetrical peony effect are formed.

Description

One hundred-facet round cut diamond and processing method thereof

Technical Field

The invention relates to the technical field of jewelry diamonds, in particular to a one-hundred-facet round cut diamond and a processing method thereof.

Background

Turkuski in 1919 concluded that an ideal cut in the United states was obtained by deriving diamond cut parameters using geometric optics based on a legacy European cut. In the 20 th century and the 70 th century, Japanese businessmen discovered occasionally that round brilliant diamonds with certain special cutting parameters can respectively show the effect of eight hearts and eight arrows in the crown and the pavilion. Thereafter, various fancy cuts such as ten-arrow, ten-heart, nine-heart and one-flower appear.

With the improvement of the cutting and grinding process and technology, the hundred-face cut diamond becomes the perfect cutting pursued by enterprises and consumers, however, the diamond can only embody good optical effect by means of proper cutting and grinding angle.

The trollflower is a famous flower in the world, and the Chinese Wendon Yisonsong is characterized by 'silt without staining' and 'wash ripple without fading'. The lotus symbolizes a pure, nice and holy love. Therefore, the trollius chinensis designs play an important role in enterprises in propaganda of Chinese culture, promotion of sales and enrichment of connotation of diamond culture.

The diamond is specially designed and processed to display different patterns, such as eight hearts with arrows, ten hearts with arrows, nine hearts with flowers and the like, so that the special design is considered to display the flower shape on the diamond, such as a jewel lotus. In the design of displaying flowers on the existing diamond, the symmetry degree is not high, and the number of light leakage points is large, so that the reflection or refraction effect of light is poor.

Disclosure of Invention

The present invention is directed to overcome the deficiencies of the prior art and to provide a one-hundred-facet round cut diamond and a method of making the same.

In order to achieve the purpose, the invention adopts the following technical scheme:

a one hundred-facet round cut diamond comprising a crown, a pavilion, and a girdle; the waist part is circular, is positioned between the crown part and the pavilion part and is used for connecting the crown part and the pavilion part; the diamonds are rotationally symmetrical;

the crown comprises a table top, eleven triangular star facets, eleven triangular main facets, eleven triangular top waist facets and twenty-two triangular upper waist facets; the table top is arranged at the top and is of an undecapiform structure;

one side of the triangular star facet is connected with the side line of the table top, and the other two sides are respectively connected with the two adjacent triangular main facets;

two sides of the triangular main facets are connected with two adjacent triangular star facets, the other side of the triangular main facets is connected with a triangular top waist surface, and one vertex of the triangular main facets is connected with the table top;

one side of the triangular waist top surface is connected with the triangular main facet, the other two sides of the triangular waist top surface are connected with the two adjacent triangular upper waist facets, and one vertex of the triangular waist top surface is connected with the waist;

two sides of the triangular upper waist small face are respectively connected with the triangular top waist face and the adjacent triangular upper waist small face, and the other side of the triangular upper waist small face is connected with the waist;

the pavilion comprises eleven quadrilateral central planes, eleven triangular lower waist facets, eleven quadrilateral petal planes and eleven quadrilateral pavilion diamond facets;

one side of the triangular lower waist small face is positioned at the waist, and the other two sides are connected with the quadrilateral petal faces;

two sides of the quadrilateral petal surface are respectively connected with two adjacent triangular lower waist facets, the other two sides of the quadrilateral petal surface are respectively connected with two adjacent quadrilateral pavilion diamond facets, and one vertex of the quadrilateral petal surface is positioned at the waist;

two sides of the rhombus facet of the quadrilateral pavilion are respectively connected with two adjacent quadrilateral petal faces, and the other two sides are respectively connected with two adjacent quadrilateral central faces;

two sides of the quadrilateral central plane are respectively connected with two adjacent quadrilateral pavilion diamond facets, the other two sides of the quadrilateral central plane are respectively connected with two adjacent quadrilateral central planes, and the vertexes of eleven quadrilateral central planes are converged at the lower end of the pavilion.

The further technical scheme is as follows: an included angle formed between the table top and the triangular main facet is a main facet crown angle, and the size of the main facet crown angle is 36.84 +/-1 degrees; an included angle formed between the table top and the triangular top waist surface is a top waist surface crown angle, and the size of the top waist surface crown angle is 41.3 +/-1 degrees; an included angle formed between the table top and the triangular star facet is a star facet angle, and the size of the star facet angle is 30.24 +/-1 degrees; the included angle between the triangular upper waist small face and the adjacent waist part is an upper waist small face angle, and the size of the upper waist small face angle is 46.8 +/-1 degrees.

The further technical scheme is as follows: the included angle between the quadrilateral petal surface and the waist is a petal section angle, and the size of the petal section angle is 42.85 +/-1 degree; the included angle between the triangular lower waist small face and the adjacent waist is a lower waist small face angle, and the size of the lower waist small face angle is 49.39 +/-1 degrees; the included angle formed by the diamond facet and the table surface of the quadrilateral pavilion is a diamond facet angle, and the range of the diamond facet angle is 38.19 +/-1 degree; the included angle formed by the quadrilateral central plane and the table top is a central plane angle, and the size of the central plane angle is 35.66 +/-1 degrees.

The further technical scheme is as follows: the surface of the waist is a smooth girdle facet or a non-polished girdle facet.

The further technical scheme is as follows: the roundness of the diamond is 99-100%, the full depth ratio is 64.5 +/-1%, the aspect ratio is 59 +/-1%, the crown height ratio is 17 +/-1%, the waist thickness ratio is 1.5-4.0%, the pavilion depth ratio is 44.5 +/-1%, the star length ratio is 40-70%, the diamond facet length ratio is 40-60%, the central surface length ratio is 30-50%, the bottom tip ratio is 0-0.8%, the table top eccentricity ratio is 0-0.6%, the bottom tip eccentricity ratio is 0-0.6%, and the table top bottom tip dislocation ratio is 0-0.6%.

The further technical scheme is as follows: the roundness of the diamond is 100%, the full depth ratio is 64.5%, the aspect ratio is 59%, the crown height ratio is 17%, the waist thickness ratio is 3%, the pavilion depth ratio is 44.5%, the star length ratio is 60%, the diamond facet length ratio is 50%, the central surface length ratio is 40%, the bottom-tip ratio is 0%, the table top eccentricity ratio is 0%, the bottom-tip eccentricity ratio is 0%, and the table top bottom-tip dislocation ratio is 0%; correspondingly: the major facet crown angle is 36.84 °; the crown angle of the top waist surface is 41.3 degrees; the star facet angle is 30.24 °; the upper waist small face angle range is 46.8 degrees; the petal face angle is 42.85 degrees; the lower waist small face angle is 49.39 degrees; the rhombus cut angle is 38.19 degrees; the central face angle was 35.66 °.

The further technical scheme is as follows: the included angle formed by the rhombus facet at the quadrilateral pavilion part and two edges connected with two adjacent quadrilateral petal faces is a first pavilion part rhombus angle; the rhombus pavilion facet and two adjacent sides connected with the central planes of the two quadrangles form an included angle which is a second pavilion rhombus angle; the first pavilion rhombus carved angle and the second pavilion rhombus carved angle are arranged oppositely; the included angle formed by the rhombus facet of the quadrilateral pavilion part, the quadrilateral petal surface and two edges connected with the quadrilateral central surface is a third pavilion part rhombus angle; the third pavilion rhombus angle is larger than the first pavilion rhombus angle and the second pavilion angle.

The further technical scheme is as follows: an included angle formed by the quadrilateral petal surface and two sides connected with the two adjacent triangular lower waist small surfaces is a first petal surface angle; the included angle formed by the quadrilateral petal surface and two edges connected with the adjacent two quadrilateral pavilion diamond facets is a second petal surface angle; the first petal face angle and the second petal face angle are arranged oppositely; the included angle formed by the quadrilateral petal surface, the triangular lower waist small surface and two edges connected with the quadrilateral pavilion diamond facet is a third petal surface angle; the third petal face angle is larger than the first petal face angle and the second petal face angle.

The further technical scheme is as follows: the included angle formed by two sides of the quadrilateral central plane connected with the adjacent two quadrilateral pavilion diamond facets is a first central plane angle; the included angle formed by two sides of the quadrilateral central plane connected with the adjacent quadrilateral central plane is a second central plane angle; the first central plane angle and the second central plane angle are arranged oppositely; the included angle of two edges of the quadrilateral central plane, the adjacent quadrilateral central plane and the quadrilateral pavilion diamond facet is a third central plane angle; the third central face angle is greater than the first central face angle or the second central face angle.

A method of making a one hundred-facet round cut diamond comprising the steps of:

the method comprises the following steps: performing pretreatment to make a drill blank meet the symbol processing requirement; fixing and clamping two ends of the table top and the pavilion of the drill blank, and rounding the outer contour of the high-speed rotary drill blank to form a waist of the diamond, wherein the diamond is conical;

step two: clamping the waist of the diamond by using a holder, and grinding the pavilion of the diamond in the circumferential direction by using the holder at an angle of 49.39 +/-1 degrees by taking the pavilion as a reference center to obtain eleven equal triangular lower waist facets;

step three: clamping the waist of the diamond by using a clamping mouth, taking the pavilion part as a reference center, and grinding the diamond in the circumferential direction of the pavilion part at a clamping mouth angle of 42.85 +/-1 degrees on the lower waist facet of the triangle to obtain eleven uniform quadrilateral petal surfaces;

step four: clamping the waist of the diamond by using a holder, taking the pavilion as a reference center, and grinding eleven equal rhombus pavilion diamond facets by using the holder at an angle of 38.19 +/-1 degrees in the circumferential direction of the pavilion on the quadrangular petal surfaces;

step five: clamping the waist of the diamond by using a collet, taking the pavilion as a reference center, and grinding eleven equal quadrilateral central planes by grinding the collet at the peripheral direction of the pavilion at the angle of 35.66 +/-1 degrees on a diamond facet positioned at the quadrilateral pavilion;

step six: clamping the table top by using a clamping nozzle, taking the waist as a reference center, taking the ratio of diameters as 59 percent, and grinding twenty-two equal triangular upper waist facets, wherein the angle of the clamping nozzle is 46.8 +/-1 degrees, and the crown is circumferentially ground;

step seven: clamping the table top by using a clamping nozzle, taking the waist as a reference center, and grinding the crown in the circumferential direction to obtain eleven equal triangular top waist surfaces, wherein the angle of the clamping nozzle is 41.3 +/-1 degrees;

step eight: clamping the table top by using a clamping nozzle, taking the waist as a reference center, and grinding the crown in the circumferential direction to obtain eleven equal triangular main facets, wherein the angle of the clamping nozzle is 36.84 +/-1 degrees;

step nine: clamping the table top by using a clamping nozzle, taking the waist as a reference center, and grinding the crown in the circumferential direction to obtain eleven equal triangular star facets, wherein the angle of the clamping nozzle is 30.24 +/-1 degrees;

step ten: and performing post-treatment on the diamond of the processed surface.

Compared with the prior art, the invention has the beneficial effects that: the one-hundred-facet round cut diamond with the crown showing the effect of the trollius chinensis provided by the invention can be used for making the diamond with the effect of the trollius chinensis seen from the crown by changing the cutting parameters of the existing round cut diamond. The crown part and the pavilion part of the diamond are perfectly symmetrical, and the light leakage points of the diamond are reduced through specific angle combination, so that a large number of light reflection and perfectly symmetrical trollius chinensis effects are formed.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more apparent, the following detailed description will be given of preferred embodiments.

Drawings

FIG. 1 is a diagram showing the crown direction effect of a one hundred-facet round cut diamond of the present invention;

FIG. 2 is a front view of a one hundred faceted round cut diamond of the present invention;

FIG. 3 is a top view of a one hundred faceted round cut diamond of the present invention;

FIG. 4 is a bottom view of a one hundred faceted round cut diamond of the present invention;

FIG. 5 is a bottom view of a one hundred faceted round cut diamond of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be connected or detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.

FIGS. 1 to 5 are drawings of the present invention.

This embodiment provides a one hundred faceted round cut diamond, see figure 2, comprising a crown 1, a pavilion 2 and a girdle 3, the diamond having an axis of symmetry with eleven rotational symmetries. The girdle 3 is circular and is located between the crown 1 and the pavilion 2 for connecting the crown 1 and the pavilion 2. The waisted portion 3 may be a smooth girdle facet, which may be maintained as a rough surface for weight retention or may be maintained without grinding the smooth facet.

The number of crown 1 cut facets is 56, and the number of pavilion 2 cut facets is 44, which total 100 main facets.

Referring to fig. 2 and 3, the crown 1 includes a table top 11 disposed at the top, 11 triangular major facets 12 at the sides, 11 triangular star facets 13, 22 upper triangular waist facets 14, and 11 triangular top waist facets 15. The table top 11 is arranged on the top and has a planar structure, and the structure is a regular undegon structure.

One side of the triangular star facet 13 is connected to the mesa 11 and the remaining two sides are connected to the triangular main facet 12.

Two sides of the triangular main facet 12 are connected with two adjacent triangular star facets 13, the other side is connected with the triangular top waist surface 15, and one vertex of the triangular main facet 12 is connected with the table top 11.

One side of the triangular top waist surface 15 is connected with the triangular main facet 12, the other two sides are connected with the two adjacent triangular upper waist facets 14, and one vertex of the triangular top waist surface 15 is connected with the waist part 3.

Two sides of the triangular upper waist small face 14 are respectively connected with the triangular top waist face 15 and the adjacent triangular upper waist small face 14, and the other side is connected with the waist 3.

Referring to fig. 2 and 4, the pavilion 2 includes eleven quadrangular central surfaces 21, eleven triangular lower waist surfaces 22, eleven quadrangular petal surfaces 23, and eleven quadrangular pavilion diamond surfaces 24.

One side of the lower triangular waist surface 22 is located at the waist portion 3, and the other two sides are connected to the quadrangular petal surface 23.

Two sides of the quadrilateral petal surface 23 are respectively connected with two adjacent triangular lower waist facets 22, the other two sides are respectively connected with adjacent quadrilateral pavilion diamond facets 24, and one vertex of the quadrilateral petal surface 23 is positioned at the waist 3.

Two sides of the rhombus pavilion part diamond facet 24 are respectively connected with two adjacent quadrangle petal faces 23, and the other two sides are respectively connected with two adjacent quadrangle central faces 21.

Two sides of the quadrangular central plane 21 are respectively connected with two adjacent quadrangular pavilion diamond facets 24, the other two sides are respectively connected with two adjacent quadrangular central planes 21, and the vertexes of eleven quadrangular central planes 21 are converged at the lower end of the pavilion 2.

The included angle between the mesa 11 and the triangular primary facet 12 is the primary facet crown angle, which ranges from 36.84 ± 1 °. The included angle between the table top 11 and the triangular top waist surface 15 is a top waist surface crown angle, and the range of the top waist surface crown angle is 41.3 +/-1 degrees. The included angle between the table 11 and the triangular star facet 13 of the crown is a star facet angle, and the range of the star facet angle is 30.24 +/-1 degrees. The angle between the triangular upper waist small face 14 and the waist 3 is an upper waist small face angle, and the range of the upper waist small face angle is 46.8 +/-1 degrees. The upper waist facet angle is the angle formed by the triangular upper waist facet 14 and the waist portion 3.

The included angle between the quadrilateral petal surface 23 of the pavilion 2 and the waist 3 is a petal facet angle, and the range of the petal facet angle is 42.85 +/-1 degrees. The angle between the triangular lower waist facet 22 of the pavilion 2 and the waist 3 is a lower waist facet angle, and the range of the lower waist facet angle is 49.39 ± 1 °. The included angle formed by the quadrangular pavilion diamond facet 24 and the table surface 11 is a diamond facet angle, and the range of the diamond facet angle is 38.19 +/-1 degrees. The included angle formed by the quadrilateral central plane 21 and the table top 11 is a central plane angle, and the range of the central plane angle is 35.66 +/-1 degrees.

Wherein, when the table-board is the standard, the included angle parallel to the table-board is 0 degree, and the included angle vertical to the table-board is 90 degrees. When the waist portion 3 is taken as a reference, the included angle parallel to the waist portion 3 is 0 degree, and the included angle perpendicular to the waist portion 3 is 90 degrees.

The diamond specifications of this example are: the roundness of the diamond is 99-100%, the full depth ratio is 64.5 +/-1%, the aspect ratio is 59 +/-1%, the crown height ratio is 17 +/-1%, the waist thickness ratio is 1.5-4.0%, the pavilion depth ratio is 44.5 +/-1%, the star length ratio is 40-70%, the length ratio of diamond facets is 40-60%, the length ratio of central planes is 30-50%, the bottom-tip ratio is 0-0.8%, the table top eccentricity ratio is 0-0.6%, the bottom-tip eccentricity ratio is 0-0.6%, and the table top bottom-tip dislocation ratio is 0-0.6%.

More preferably, the diamond has a roundness of 100%, a full depth ratio of 64.5%, an aspect ratio of 59%, a crown height ratio of 17%, a waist thickness ratio of 3%, a pavilion depth ratio of 44.5%, a star length ratio of 60%, a diamond facet length ratio of 50%, a central plane length ratio of 40%, a base-tip ratio of 0%, a table top eccentricity ratio of 0%, a base-tip eccentricity ratio of 0%, and a table top base-tip dislocation ratio of 0%; correspondingly: the major facet crown angle is 36.84 °; the crown angle of the top waist surface is 41.3 degrees; the star facet angle is 30.24 °; the upper waist small face angle range is 46.8 degrees; the petal face angle is 42.85 degrees; the lower waist small face angle is 49.39 degrees; the rhombus cut angle is 38.19 degrees; the central face angle was 35.66 °.

Referring to fig. 2 and 5, an included angle formed by the diamond facet 24 of the quadrangular pavilion and two edges connecting the two adjacent petal facets 23 of the quadrangular pavilion is a first pavilion diamond angle a 241. The included angle formed by the two sides of the quadrangular pavilion diamond facet 24 and the two sides of the adjacent two quadrangular central planes 21 is a second pavilion diamond angle a 242. The first pavilion rhombus angle a241 is provided opposite to the second pavilion rhombus angle a 242. The included angle formed by the quadrangular pavilion diamond facet 24, the quadrangular petal surface 23 and the two sides connected with the quadrangular central surface 21 is a third pavilion diamond angle a 243. The third pavilion rhombus angle a243 is larger than the first and second pavilion rhombus angles a241 and a 242.

Referring to fig. 2 and 5, an included angle formed by the quadrilateral petal surface 23 and two sides connected to two adjacent triangular lower waist facets 22 is a first petal surface angle a 231. The included angle formed by the quadrilateral petal surface 23 and two edges connected with the adjacent two quadrilateral pavilion diamond facets 24 is a second petal surface angle a 232. The first petal face angle a231 is disposed opposite the second petal face angle a 232. The included angle formed by the quadrilateral petal surface 23, the triangular lower waist small surface 22 and the two edges connected with the quadrilateral pavilion diamond surface 24 is a third petal surface angle a 233. The third petal face angle a233 is greater than the first petal face angle a231 and the second petal face angle a 232.

Referring to fig. 2 and 5, the included angle formed by the two sides of the quadrilateral central plane 21 connecting with the two adjacent quadrilateral pavilion diamond facets 24 is a first central plane angle a 211. The included angle formed by the two sides of the quadrilateral central plane 21 connected with the adjacent quadrilateral central plane 21 is a second central plane angle a 212. The first central face angle a211 is disposed opposite the second central face angle a 212. The included angle between the quadrilateral central plane 21 and the two sides of the quadrilateral pavilion diamond facet 24 adjacent to the quadrilateral central plane 21 is a third central plane angle a 213. The third central face angle a213 is greater than the first central face angle a211 or the second central face angle a 212.

A method for processing a one-hundred-facet round cut diamond comprises the following specific processing steps:

the diamond pretreatment comprises step 1.1 and step 1.2.

Step 1: performing pretreatment to make a drill blank meet the symbol processing requirement; the table 11 and the pavilion 2 of the drill blank are fixed and clamped, the outer contour of the drill blank rotating at high speed is rounded to form the waist 3 of the diamond, and the diamond is conical.

The diamond pretreatment comprises step 1.1 and step 1.2.

Step 1.1: and screening the drill blanks, and selecting the similar three-dimensional square drill blanks for design.

Step 1.2: fixing the drill blanks, cutting the drill blanks into two parts from the middle by using a copper sheet and the diamond powder to form 1 table top 11 and a pavilion 2, optionally selecting one drill blank for processing the two drill blanks, and processing the other drill blank by using the same processing steps

Step 2: the girdle 3 of the diamond is clamped by a holder, the pavilion 2 of the diamond is ground by using the holder angle of 49.39 +/-1 degrees by taking the pavilion 2 (conical shape) as a reference center, and 11 equal triangular lower girdle facets 22 are ground.

And step 3: the clamping mouth clamps the waist 3 of the diamond, takes the pavilion 2 as a reference center, and polishes along the circumferential direction of the pavilion 2 at a clamping mouth angle of 42.85 +/-1 degrees on the lower waist facet 22 of the triangle, so as to grind eleven uniform quadrilateral petal surfaces 23.

And 4, step 4: the girdle 3 of the diamond is clamped by a collet, and the collet angle is 38.19 +/-1 degrees on the quadrangular petal surface 23 by taking the pavilion 2 as a reference center, and eleven uniform quadrangular pavilion diamond facets 24 are ground in the circumferential direction of the pavilion 2.

And 5: the girdle 3 of the diamond is clamped by a collet, the angle of the collet is 35.66 +/-1 degrees on a diamond surface 24 positioned at the quadrangular pavilion part by taking the pavilion part 2 as a reference center, and eleven uniform quadrangular central planes 21 are ground in the circumferential direction of the pavilion part 2.

Step 6: the table top 11 is clamped by a clamping nozzle, the waist part 3 is taken as a reference center, the diameter proportion is 59 percent, the angle of the clamping nozzle is 46.8 +/-1 degrees, the crown part 1 is circumferentially ground, and twenty-two equal triangular upper waist facets 14 are ground.

And 7: the table top 11 is clamped by a clamping nozzle, the waist part 3 is taken as a reference center, the angle of the clamping nozzle is 41.3 +/-1 degrees, the crown part 1 is circumferentially polished, and eleven equal triangular top waist surfaces 15 are ground.

And 8: clamping the table top 11 by using a clamping nozzle, taking the waist part 3 as a reference center, and grinding the crown part 1 in the circumferential direction to obtain eleven equal triangular main facets 12, wherein the angle of the clamping nozzle is 36.84 +/-1 degrees.

And step 9: the table top 11 is clamped by a clamping nozzle, the waist part 3 is taken as a reference center, the angle of the clamping nozzle is 30.24 +/-1 degrees, the crown part 1 is ground in the circumferential direction, and eleven equal triangular star facets 13 are ground.

Step 10: and performing post-treatment on the diamond of the processed surface, wherein the post-treatment comprises the working procedures of polishing, sexual cleaning and the like.

In the cutting parameters in the embodiment of the invention, the pavilion angle is the most critical factor, the change of the pavilion angle greatly influences the attractiveness of the internal lighting effect pattern, and meanwhile, the accurate matching of the crown angle is also very critical.

In the diamond in the embodiment of the invention, an observer can observe the optical effect of the trollius chinensis in the crown part 1, the flower shape is plump and obvious, and the blooming effect is prominent, as shown in figure 1.

In fig. 1, the jewel lotus consists of four circles of petals, each circle of which is 11 pieces, and the jewel lotus has perfect, bright, symmetrical and contained optical effects.

In summary, the one-hundred-facet round cut diamond with the crown showing the effect of the trollius chinensis provided by the invention can be used for making the diamond with the effect of the trollius chinensis seen from the crown by changing the cutting parameters of the existing round cut diamond. The crown part and the pavilion part of the diamond are perfectly symmetrical, and the light leakage points of the diamond are reduced through specific angle combination, so that a large number of light reflection and perfectly symmetrical trollius chinensis effects are formed.

The technical contents of the present invention are further illustrated by the examples only for the convenience of the reader, but the embodiments of the present invention are not limited thereto, and any technical extension or re-creation based on the present invention is protected by the present invention. The protection scope of the invention is subject to the claims.

Claims (10)

1. A one hundred-facet round cut diamond comprising a crown, a pavilion, and a girdle; the waist part is circular, is positioned between the crown part and the pavilion part and is used for connecting the crown part and the pavilion part; the diamond is characterized in that the diamonds are arranged in a rotational symmetry manner;

the crown comprises a table top, eleven triangular star facets, eleven triangular main facets, eleven triangular top waist facets and twenty-two triangular upper waist facets; the table top is arranged at the top and is of a regular undegon structure;

one side of the triangular star facet is connected with the side line of the table top, and the other two sides are respectively connected with the two adjacent triangular main facets;

two sides of the triangular main facets are connected with two adjacent triangular star facets, the other side of the triangular main facets is connected with a triangular top waist surface, and one vertex of the triangular main facets is connected with the table top;

one side of the triangular waist top surface is connected with the triangular main facet, the other two sides of the triangular waist top surface are connected with the two adjacent triangular upper waist facets, and one vertex of the triangular waist top surface is connected with the waist;

two sides of the triangular upper waist small face are respectively connected with the triangular top waist face and the adjacent triangular upper waist small face, and the other side of the triangular upper waist small face is connected with the waist;

the pavilion comprises eleven quadrilateral central planes, eleven triangular lower waist facets, eleven quadrilateral petal planes and eleven quadrilateral pavilion diamond facets;

one side of the triangular lower waist small face is positioned at the waist, and the other two sides are connected with the quadrilateral petal faces;

two sides of the quadrilateral petal surface are respectively connected with two adjacent triangular lower waist facets, the other two sides of the quadrilateral petal surface are respectively connected with two adjacent quadrilateral pavilion diamond facets, and one vertex of the quadrilateral petal surface is positioned at the waist;

two sides of the rhombus facet of the quadrilateral pavilion are respectively connected with two adjacent quadrilateral petal faces, and the other two sides are respectively connected with two adjacent quadrilateral central faces;

two sides of the quadrilateral central plane are respectively connected with two adjacent quadrilateral pavilion diamond facets, the other two sides of the quadrilateral central plane are respectively connected with two adjacent quadrilateral central planes, and the vertexes of eleven quadrilateral central planes are converged at the lower end of the pavilion;

the included angle formed between the table top and the triangular main facet is a main facet crown angle, and the size of the main facet crown angle is 36.84 +/-1 degrees.

2. A one hundred-facet round cut diamond according to claim 1, wherein the included angle formed between the table and the triangular top girdle facet is the top girdle facet crown angle, the top girdle facet crown angle having a magnitude of 41.3 ± 1 °; an included angle formed between the table top and the triangular star facet is a star facet angle, and the size of the star facet angle is 30.24 +/-1 degrees; the included angle between the triangular upper waist small face and the adjacent waist part is an upper waist small face angle, and the size of the upper waist small face angle is 46.8 +/-1 degrees.

3. The one hundred-faceted round cut diamond of claim 2, wherein said quadrilateral petal face is adjacent to the waist at a petal facet angle, the magnitude of petal facet angle being 42.85 ± 1 °; the included angle between the triangular lower waist small face and the adjacent waist is a lower waist small face angle, and the size of the lower waist small face angle is 49.39 +/-1 degrees; the included angle formed by the diamond facet and the table surface of the quadrilateral pavilion is a diamond facet angle, and the range of the diamond facet angle is 38.19 +/-1 degree; the included angle formed by the quadrilateral central plane and the table top is a central plane angle, and the size of the central plane angle is 35.66 +/-1 degrees.

4. A one hundred-faceted round cut diamond as claimed in claim 3, wherein said girdle surface is a smooth girdle facet or a non-polished girdle facet.

5. The one hundred-facet round cut diamond of claim 4, wherein the diamond has a roundness of 99% to 100%, a full depth ratio of 64.5 ± 1%, a table aspect ratio of 59 ± 1%, a crown height ratio of 17 ± 1%, a waist thickness ratio of 1.5% to 4.0%, a pavilion depth ratio of 44.5 ± 1%, a star length ratio of 40% to 70%, a diamond facet length ratio of 40% to 60%, a median face length ratio of 30% to 50%, a pavilion tip ratio of 0% to 0.8%, a table eccentricity ratio of 0% to 0.6%, a culet eccentricity ratio of 0% to 0.6%, and a table pavilion tip misalignment ratio of 0% to 0.6%.

6. The one hundred-point round cut diamond of claim 5, wherein said diamond has a roundness of 100%, a full depth ratio of 64.5%, an aspect ratio of 59%, a crown height ratio of 17%, a waist thickness ratio of 3%, a pavilion depth ratio of 44.5%, a star length ratio of 60%, a diamond facet length ratio of 50%, a median face length ratio of 40%, a pavilion tip ratio of 0%, a table top eccentricity ratio of 0%, a pavilion tip eccentricity ratio of 0%, and a table top pavilion tip misalignment ratio of 0%; correspondingly: the major facet crown angle is 36.84 °; the crown angle of the top waist surface is 41.3 degrees; the star facet angle is 30.24 °; the upper waist small face angle range is 46.8 degrees; the petal face angle is 42.85 degrees; the lower waist small face angle is 49.39 degrees; the rhombus cut angle is 38.19 degrees; the central face angle was 35.66 °.

7. The one-hundred-facet round cut diamond according to claim 6, wherein an angle formed by the two edges of the quadrangular pavilion diamond facet and the two edges of the quadrangular petal surface adjacent to each other is a first pavilion diamond angle; the rhombus pavilion facet and two adjacent sides connected with the central planes of the two quadrangles form an included angle which is a second pavilion rhombus angle; the first pavilion rhombus carved angle and the second pavilion rhombus carved angle are arranged oppositely; the included angle formed by the rhombus facet of the quadrilateral pavilion part, the quadrilateral petal surface and two edges connected with the quadrilateral central surface is a third pavilion part rhombus angle; the third pavilion rhombus angle is larger than the first pavilion rhombus angle and the second pavilion angle.

8. The one-hundred-facet round cut diamond according to claim 7, wherein the included angle formed by the two sides of the quadrilateral petal face connected to the two adjacent triangular lower waist facets is a first petal face angle; the included angle formed by the quadrilateral petal surface and two edges connected with the adjacent two quadrilateral pavilion diamond facets is a second petal surface angle; the first petal face angle and the second petal face angle are arranged oppositely; the included angle formed by the quadrilateral petal surface, the triangular lower waist small surface and two edges connected with the quadrilateral pavilion diamond facet is a third petal surface angle; the third petal face angle is larger than the first petal face angle and the second petal face angle.

9. The one hundred-faceted round cut diamond of claim 8, wherein said quadrilateral central plane forms an included angle with two sides of said adjacent two quadrilateral pavilion diamond facets at a first central plane angle; the included angle formed by two sides of the quadrilateral central plane connected with the adjacent quadrilateral central plane is a second central plane angle; the first central plane angle and the second central plane angle are arranged oppositely; the included angle of two edges of the quadrilateral central plane, the adjacent quadrilateral central plane and the quadrilateral pavilion diamond facet is a third central plane angle; the third central face angle is greater than the first central face angle or the second central face angle.

10. A method of making a one hundred-facet round cut diamond, comprising the steps of:

the method comprises the following steps: performing pretreatment to make a drill blank meet the symbol processing requirement; fixing and clamping two ends of the table top and the pavilion of the drill blank, and rounding the outer contour of the high-speed rotary drill blank to form a waist of the diamond, wherein the diamond is conical;

step two: clamping the waist of the diamond by using a holder, and grinding the pavilion of the diamond in the circumferential direction by using the holder at an angle of 49.39 +/-1 degrees by taking the pavilion as a reference center to obtain eleven equal triangular lower waist facets;

step three: clamping the waist of the diamond by using a clamping mouth, taking the pavilion part as a reference center, and grinding the diamond in the circumferential direction of the pavilion part at a clamping mouth angle of 42.85 +/-1 degrees on the lower waist facet of the triangle to obtain eleven uniform quadrilateral petal surfaces;

step four: clamping the waist of the diamond by using a holder, taking the pavilion as a reference center, and grinding eleven equal rhombus pavilion diamond facets by using the holder at an angle of 38.19 +/-1 degrees in the circumferential direction of the pavilion on the quadrangular petal surfaces;

step five: clamping the waist of the diamond by using a collet, taking the pavilion as a reference center, and grinding eleven equal quadrilateral central planes by grinding the collet at the peripheral direction of the pavilion at the angle of 35.66 +/-1 degrees on a diamond facet positioned at the quadrilateral pavilion;

step six: clamping the table top by using a clamping nozzle, taking the waist as a reference center, taking the ratio of diameters as 59 percent, and grinding twenty-two equal triangular upper waist facets, wherein the angle of the clamping nozzle is 46.8 +/-1 degrees, and the crown is circumferentially ground;

step seven: clamping the table top by using a clamping nozzle, taking the waist as a reference center, and grinding the crown in the circumferential direction to obtain eleven equal triangular top waist surfaces, wherein the angle of the clamping nozzle is 41.3 +/-1 degrees;

step eight: clamping the table top by using a clamping nozzle, taking the waist as a reference center, and grinding the crown in the circumferential direction to obtain eleven equal triangular main facets, wherein the angle of the clamping nozzle is 36.84 +/-1 degrees;

step nine: clamping the table top by using a clamping nozzle, taking the waist as a reference center, and grinding the crown in the circumferential direction to obtain eleven equal triangular star facets, wherein the angle of the clamping nozzle is 30.24 +/-1 degrees;

step ten: and performing post-treatment on the diamond of the processed surface.

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