WO2013163671A1

WO2013163671A1 - Destiny cut

Info

Publication number: WO2013163671A1
Application number: PCT/AU2012/001214
Authority: WO
Inventors: John Hudson
Original assignee: John Hudson
Priority date: 2012-05-01
Filing date: 2012-10-08
Publication date: 2013-11-07
Also published as: WO2013163670A1

Abstract

A gemstone comprising a crown, a pavillion and a girdle. The crown comprising an octagonal table, eight pentangular second half facets and sixteen upper girdle facets. The pavillion comprising four pairs of concentrically arranged cutlet pavillion facets, four pairs of third half facets, four hectgonal lower half facets, four rectangular girdle pavillion facets and four pair of lower girdle break facets. The girdle comprising sixteen facets.

Description

Field of Invention

The present invention relates generally to gemstones. More specifically, the present invention is related to a gemstone cut, primarily for diamonds with use extending to colored gemstones.

Discussion of Prior Art

Diamonds are one of the most popular gemstones. One measure of the quality of a diamond is related to the cut of the diamond. The better the cut of a diamond, the higher the quality of light reflected and thus an increase in the brilliance.

Figure 1 illustrates the general structure associated with a diamond. The basic structure can be divided into three sections: a crown 102 which forms the upper section of the diamond, a pavilion 104 which forms the lower section of the diamond, and a girdle 106 which forms the rim separating the crown from the pavilion.

figure 2a illustrates a prior art gemstone cut as described in US patent 693,084. The patent provides for a diamond, or other precious stone having a series of quadrilateral facets a, meeting in the center, at an elevation to form an apex, a series of quadrilateral facets a', surrounding the series of quadrilateral facets. A second series of quadrilateral facets a2, surrounds the facets a' and extends to the girdle, and triangular girdle facets a3 fills the space between the points of the facets a2 and the girdle.

The U.S. patent to Huisman (3,585,764) provides for a method of cutting a diamond to produce 72 pavilion facets comprising the steps of: 1) cutting four pavilion facets, 2) dividing the four into eight pavilion facets, 3) cutting the eight into sixteen pavilion facets with substantially overlapping edges, 4) polishing the girdle to a 90° edge, 5) cutting a facet at 53° at each overlap, 6) dividing each such latter facet into three facets such that each latter facet is provided with a diamond shape, and 7) cutting 38 facets into the girdle.

The U.S. patent to Elbe (3,788,097) provides for a brilliant gem having upper and lower facets which are inclined to a girdle plane and formed by lateral surfaces of a pyramid. The angles between the lower facets and the girdle plane ranges from 37° to 45°, and are selected such that emerging light is dispersed in a dispersion angle from 1°20 minutes to 12° 57 minutes. The gem is also provided with a second plane parallel to the girdle plane, and contains an odd number of upper and lower facets in a ring of facets circling the gem.

The U.S. patent to Grossbard (4,020,649) provides for a step cut gemstone with a straight edged polygonal shaped girdle that has a generally pyramidal base and a crown with girdle and table breaks, wherein at least one of these breaks is cut with triangular shaped facets. The angle between the plane of the girdle break of the crown and the table should be in the range from 35° to 42".

The U.S. patent to Andrychuk (4,083,352) provides for a method for systematically and accurately increasing the brilliance and depth of color of a gemstone without the need to determine the pavilion and facet angles by trial and error.

The U.S. patent to Grossbard (4,118,949) provides for a brilliantized step cut diamond that has a straight edged polygonal shaped girdle with sides and corner facets; a crown with table and a table-and-girdle breaks which are faceted; and a pyramidal base having a point cutlet, a cutlet break and a girdle break with ridges extending from the cutlet to the comer of the girdle. A fan with three pairs of triangular halves is disposed symmetrically about each ridge with a triangular facet in each corner of the base having an edge which is collinear with the edge of a corner facet and an apex at a ridge. The angles between the cutlet break and the plane of the girdle is between 30" and 43°.

The U.S. patent to Elbe (4,308,727) provides for a jewel of a brilliant type wherein a first plurality of facets are provided on the bezel and include an annular facet region whose facets are larger than 50° and up to 90°, and another annular facet region whose facets extend from the first mentioned region towards the table and are inclined to the girdle at angles smaller than 25°. A second plurality of facets is also provided on the pavilion and includes a further annular region of facets, which are included to the girdle at angles between 25° and 52°.

The U.S. patent to Cheng (6,305,193 Bl) provides for a gemstone that includes a pavilion portion, a crown portion and a girdle portion provided between the pavilion and the crown. The crown portion includes a plurality of facets provided on the surface and the crown portion has eight longitudinal sections, which collectively define it.

The U.S. patent to Alain Vets (US/2011/0146350 Al) provides for a round brilliant cut gemstone and method for cutting the same. The invention relates to a gemstone comprising of a girdle, a crown and a pavilion. The crown comprises of a table, eight star facets surrounding the table, eight first half facets which are aligned between the star facets, eight second half facets aligned adjacent to the first half facets and sixteen upper girdle facets aligned between the second half facets. The pavilion comprises sixteen pavilion main facets and sixteen lower girdle facets aligned between the pavilion main facets. The invention also relates to a method of cutting the gemstone.

Whatever the precise merits, features and advantages of the above cited references, none of them achieve or fulfills the purposes of the present invention.

Summary of the Invention

The present invention provides for a novel gemstone cut wherein the gemstone comprises a crown, a girdle, and a pavilion, each of which have facets disposed on them.

The crown further comprises an octagonal table (9), which comprises of 25 facets.

In the preferred embodiment, the polishing angle of the eight pairs of upper-girdle facet (7) is 37.32°. A second-half facet (8) is evenly placed in-between two upper-girdle facets (7), the latter appearing on the left and right of each second-half facet respectively. The polishing angle for each second-half facet (8) is 31.00°. In the preferred embodiment.

With respect to the crown in.the present invention's gemstone cut, there are eight

concentrically arranged second-half facet facets (8), and in-between these respective facets ) are disposed upper girdle facets (7). In the preferred embodiment, the polishing angles associated with the upper-girdle facets (7) are 37.32°, second-half facets (8) 31.00°, and the table (9) 0°.

In the preferred embodiment, the girdle comprises of 16 facets (0). Each girdle full-facet comprises polishing angle at 90°.

With respect to the pavilion in the present invention's gemstone cut, there are 48 facets. In the present embodiment, there are sixteen rectangular bottom-half facets (1) polished at an angle of 57.17°. There are four rectangle girdle-pavillion facets (3) Each of the four rectangular girdle- pavilion facets polished at an angle of 49.7° (3) is placed in-between two bottom-half facets (1). In the present embodiment, there are four hectagonal lower second -half facets (4) polished at an angle of 49.27°, and are placed in-between two bottom-half facets (1). There are eight lower-girdle-break facets (2) polished at an angle of 50° ; In the present invention's gemstone the eight cutlet-pavilion facets (5) give rise to a heart, flower figures 3d and 14c, respectively, the eight eight cutlet-pavilion facets are set into pairs. At the base of the pavilion, and dispersed evenly between eight cutlet-pavillion facets (5) are eight third-half facets (6). The cutting angles in of these respective facets in the pavilion are: 39.25° for the third-half facets (6), 44.26° for the cutlet-pavilion facets (5), 49.27° for the lower second -half facets (4), 49.7° for the girdle- pavillion facets (3), 50° for the lower-girdle-break facets (2), and 51.17° for the bottom-half facets (1)

Additionally, the gemstone of the present invention can be a precious or a semiprecious stone. In the preferred embodiment, the gemstone is a diamond. Brief Description of the Drawings

Figure 1 illustrates a general structure associated with a diamond.

Figures 2a, 2b and 2c illustrate a prior art diamond cuts.

Figures 3a, 3b, 3c and 3d collectively illustrate the top view of the present invention's gemstone crown and table, including a part of the girdle.

Figures 4a, 4b, 4c, 4d and 4e illustrates a top view of the present invention's gemstone pavilion, including a part of the girdle.

Figure 5 illustrates a ray-traced model of the gemstone of the present invention.

Figures 6a, 6b and 6c collectively illustrate the bottom-half facet, cutting process and dimensions of the completed cut.

Figure 7a, illustrates the girdle facets cut in process

Figures ^b and 7c collectively illustrate the triangular bottom half facets, cutting process and dimensions of the completed cut.

Figures 8a, and 8b collectively illustrate the lower girla break facets, cutting process and dimensions of the completed cut.

Figures 9a, and 9b collectively illustrates the girdle pavilion facets, cutting process and dimensions of the completed cut.

Figures 10a, and 10 b collectively illustrates the hectagonal lower half facets, cutting process and dimensions of the completed cut

Figures 11a, and 11 b collectively illustrates the cutlett pavillion facets and heart-shape set, cutting process and dimensions of the completed cut

Figure 12a, and 12 b collectively illustrates the third half facets, cutting process and dimensions of the completed cut

Figures 13a, and 13b collectively illustrates the upper girdle facets, cutting process and dimensions of the completed cut

Figures 14a, and 14b collectively illustrate the second half facets, and dimensions of the completed cut.

Figure 15, illustrates the table and dimensions therein Figure 16 illustrates the completed facet dimensions and the completed cut.

Description of the Preferred Embodiments

While this invention is illustrated and described in a preferred embodiment, the gemstone may be produced in many different configurations, forms and materials.

There is depicted in the drawings, and will herein be described in detail, a preferred embodiment of the invention, with the understanding that the present disclosure is to be considered as an exemplification of the principles of the invention and the associated functional specifications for its construction and is not intended to limit the invention to the embodiment illustrated. Those skilled in the art will envision many other possible variations within the scope of the present invention.

It should be noted that the gemstone of the present invention can be a precious stone or a semi-precioiis stone, but in the preferred embodiment, the gemstone is a diamond.

Thus, the type of gemstone should not be used to restrict the scope of the present invention.

Furthermore, the specific parameters (e.g., depths, heights, ratios, and angles) are used for illustrative purposes only and should not be used to limit the scope of the present invention. Additionally, the shape of the gemstone in the figures corresponding to the specification and the preferred embodiment are for illustrative purposes only, and one skilled in the art can envision using other shapes (e.g., square with corner breaks, octagonal shape, square shape, oval shape etc.).

Figures 3a, 3b and 3c collectively illustrate the crdwn of the gemstone of the preferred embodiment of the present invention.

Figure 3a illustrates a top view of crown with its various facets. Crown includes a flat table shaped like an octagon (9) and is disposed at the top of the crown. Also disposed on the diagonally extended side of crown are facets, which include: upper-girdle-facets (7), second- half-facets (8).

As mentioned earlier, the octagonal table is surrounded by eight pentangular second-half facets (intercept between 9, 7 and 0), one for each side of the octagonal table. In the preferred embodiment, the pentangular second-half facets (8) are angled downwardly at 31° (which are intercepted between ?,7,and 0 ) the upper-girdle-facets (7), are angled downwardly at 37.32° from the plane of the octagonal table at 0" (9)

Figure 3b illustrates a side-view of the crown and the girdle of the present invention's gemstohe. While figure 3c illustrates the crown in the preferred embodiment with a maximum table (6) spread of 64.3%, and a maximum spread of 11.0% for the upper-girdle facet (7). Figure 4a, 4b, 4c and 4d collectively illustrate the pavilion of the gemstone of the preferred embodiment of the present invention.

Figure 4a illustrates top view showing a pavilion portion of the present invention's gemstone in the preferred embodiment. In the preferred embodiment, the cutlet pavilion facet (5) is angled downwardly at 44.26°, the lower girdle break facet (2) is angled downwardly at 50.0°, the rectangular girdle pavillion facet (3) is angled downwardly at 49.7°, the hectagonal lower half facet (4) is angled downwardly at 49.27°, the third half facets are angled downwardly at 39.25°, and the triangular bottom half facets are angled downwardly at 51.17°.

Figures 4b and 4c illustrates a side-view showing the pavilion portion and part of the girdle of the said invention's gemstone in the preferred embodiment.

Figure 4b illustrates the pavilion in the preferred embodiment with requisite maximum spreads from a top-view. This illustration shows a maximum cutlet pavilion spread (5) from the intercept between (1), (2),(3),and (4) (point-to-point diagonally and horizontally) as 55.6%; a maximum third half facet spread (6) from the intercept between (4) and (4) (point-to-point diagonally and horizontally) as 38%; a maximum cut for the lower girdle break facets (as between the intercept of the girdle and (5), point-to-point both horizontally and diagonally) as 23%; and the maximum spread of separation between the cutlet pavilion both diagonally and horzontally point to point as 9.4%.

Figure 4e illustrates the pavilion, girdle and crown in the preferred embodiment with requisite maximum spreads from a side-view. The maximum cut from the table to the top of the girdle is 16.85%; from the top of the girdle to the base of the girdle a maximum cut of 1.15%;from the base of the girdle (0) to the bottom of the pavillion 82%; from the base of the paviilion to the intercept between (6) and (4) a maximum of 24.71%; from the base of the pavillion the cutlett facets (5) to the intercept between (3) and (1), and (2) being 31.46%, and 41.57% respectively.

Figure 4f illustrates the percentage maximum cut in preferred embodiment as comprising a maximum of 62.2% depth proportion, /100% width (spread).

It should be noted that the depths and heights given in Figures 4d and 4f are expressed as a percentage of the diameter. Furthermore, throughout the specification specific angles are provided for various facets with the understanding that these angles cannot be used to restrict the scope of the present invention.

In summary, eight third half facets (6) are formed in the middle and extend outward towards the girdle, divided into pairs by the cutlett pavillion facets (5). The third half facets are surrounded by eight cutlett pavillion facets (5) and four hectagoal lower half facets (4). In the preferred embodiment, the third half facets are angled downwardly at 39.25°.

eight cutlett pavillion facets (5) are divided into pairs by the third half facets which are equally divided into pairs and spread equally both horizontally and vertically,and are dispersed evenly around the gem. They are intercpted by the rectangle girdle pavillion facets (3), the rectangular bottom half facets (1), and the lower girdle break facets (2). In the preffered emodiment the cutlett pavillion facets are angled downwardy at 44.26°.

four hectagonal lower half facets (4), are formed at the base of the girdle and extend inwardly toward the centre of the pavillion,and are dispersed evenly around the girdle. They are intercepted by the girdle (0), the third half facets (6), the cutlet pavillion facets (5), and the rectangular bottom half facets (1), separated by rectangular bottom half facets (1) on either side spread equally which in turn are divided by rectangle girdle pavillion facets (3), and lower girdle break facets (2). In the preffered emodiment the hectagonal lower half facets are angled downwardly at 49.27 °.

four rectangular girdle pavillion facets (3), are formed at the base of the girdle and extend inwardly toward the centre of the pavillion, they spread equally both horizontally and vertically, and are dispersed evenly around the girdle. Are intercepted by the girdle (0), and the cutlet pavillion facets (5), the rectangular girdle pavilion facets are sided eqully on both sides by, rectangular bottom half facets (l).ln the preffered emodiment the rectangular girdle pavillion facets are angled downwardly at 49.7 °.

four lower girdle break facets (2) are formed at the base of the girdle and extend inwardly toward the centre of the pavillion. They spread equally both horizontally and vertically, and are intercepted by the girdle (0), the cutlet pavillion facets (5), rectangular bottom half facets (1) on either side spread equally and are dispersed evenly around the girdle. In the preffered emodiment the rectangular girdle pavillion facets are angled downwardly at 50.0 °.

sixteen rectangular bottom half facets (1) are formed at the base of the girdle and extend inwardly toward the centre of the pavillion, they spread equally both horizontally and vertically, and are dispersed evenly around the girdle, and are intercepted by the girdle (0), the cutlet pavillion facets (5), lower girdle break facets (2), and girdle pavillion facets (3). In the preffered emodiment the rectangular girdle pavillion facets are angled downwardly at 51.17°.

Notably, the table shown in Figure 15 offers a more specific range associated with each facet of the present invention's gemstone.

Figure 5 illustrates a ray-traced model of the preferred embodiment of the gemstone of the present invention.

Figure 6 illustrates a computer generated top view of the gemstone of the present invention. Figures 6a, 6b, 6c, 6d illustrates a computer generated top view of the gemstone of the present invention at average inclination angles of 0 (a), 10 (b), 20%(c), and 30%(d) respectively

Table 1

Notably, the abovementioned embodiment is approximately 14% brighter.

Conclusion

A system and method has been shown in the above embodiments for the effective

implementation of this gemstone cut. While various preferred embodiments have been shown and described, it will be understood that there is no intent to limit the invention by such disclosure, but rather, it is intended to cover all modifications and alternate constructions falling within the spirit and scope of the invention, as defined in the appended claims. ;For example, the present invention should not be limited by type of gemstone or shape of gemstone.

Claims

1. A gemstone comprising:

As mentioned earlier, the octagonal table is surrounded by eight pentangular

second-half facets (intercept between 9, 7 and 0), one for each !side of the octagonal table. In the preferred embodiment, the pentangular second-half facets (8) are angled downwardly at 31° (which are intercepted; between 9,7,and 0 ) the upper-girdle-facets (7), are angled downwardly at 37.32° from the plane of the octagonal table at 0° (9)

a. a crown comprising an octagonal table (9) disposed at the top of said crown, eight pentangular second-half facets (8), sixteen upper-girdle-facets (7); said second half facets disposed around and in-between said upper-girdle-facets (7) which are divded into pairs and the girdle, said upper-girdle-facets (7) are dispoed around and set between the girdle and second-half faciets (8);

b. a pavilion comprising four pairs of concentrically arranged cutlet pavilion facets (5), four pairs of third half facets (6), and four hectgonal lower half facets (4); and four rectangular girdle pavillion facets (3), and four pair of lower girdle break facets; said pairs of of third half facets (6) are evenly dispersed between

Claims

Table 1 Notably, the abovementioned embodiment is approximately 14% brighter. Conclusion A system and method has been shown in the above embodiments for the effective implementation of this gemstone cut. While various preferred embodiments have been shown and described, it will be understood that there is no intent to limit the invention by such disclosure, but rather, it is intended to cover all modifications and alternate constructions falling within the spirit and scope of the invention, as defined in the appended claims. For example, the present invention should not be limited by type of gemstone or shape of gemstone. Claims

1. A gemstone comprising:

As mentioned earlier, the octagonal table is surrounded by eight pentangular

second-half facets (intercept between 9, 7 and 0), one for each side of the octagonal table. In the preferred embodiment, the pentangular second-half facets (8) are angled downwardly at 31° (which are intercepted between 9,7,and 0 ) the upper-girdle-facets (7), are angled downwardly at 37.32° from the plane of the octagonal table at 0° (9)

a. a crown comprising an octagonal table (9) disposed at the top of said crown, eight pentangular second-half facets (8), sixteen upper-girdle-facets (7); said second half facets disposed around and in-between said upper-girdle-facets (7) which are divded into pairs and the girdle, said upper-girdle-facets (7) are dispoed around and set between the girdle and second-half facets (8);

11 pairs of cutlet pavilion facets (5) on the left and right; said cutlet pavilion facets (5) are evenly dispersed between pairs of third half facets (6), with hectgonal lower half facets^J (4), rectangular bottom half facets (1), a pair of lower girdle break facets (2) which are evenly set apart by a further pair of rectangular bottom half facets (1) and a rectangle girdle pavillion facet; said hectagonal lower half facet (4) is placed evenly between rectangular bottom half facets (1), and cutlet pavillion facets (5),placed evenly on either side; said rectangular girdle pavillion facets (3) have a rectangular bottom half facet (1) evenly placed either side, and intercepting at the bottom are a pair of cutlet pavilion facets (5); said lower girdle break facets (2) have a rectangular bottom half facet (1) evenly placed either side, with a cutlet pavillion facets (5) intercepting at the bottom; said rectangular bottom half facet (1) is set between a rectangular girdle pavillion facet (3), a lower girdle break facet (2), is intercepted at the bottom by a cutlet pavillion facet (5) and is intercepted at the top by the girdle facet (0)

c. a girdle comprising sixteen facets (0).

2. A gemstone as per claim 1, wherein said gemstone is any of the following: precious gemstone or semi-precious gemstone.

3. A gemstone as per claim 1, wherein said precious gemstone is a diamond.

4. A gemstone as per claim 1, wherein a polishing angle associated with said second-half facet is 31.00°.

5. A gemstone as per claim 1, wherein a polishing angle associated with said table is 0.00°.

6. A gemstone as per claim 1, wherein a polishing angle associated with said upper-girdle facet is 37.32°.

7. A gemstone as per claim 1, wherein a polishing angle associated with said triangular bottom half facet is 51.17°.

8. A gemstone as per claim 1, wherein a polishing angle associated with said lower girdle

12 break facet is 50'.

9. A gemstone as per claim 1, wherein a polishing angle associated with said rectangle girdle pavillion facet is 49.7°.

10. A gemstone as per claim 1, wherein, a polishing angle associated with said hectagonal lower half facet is 49.27°. ₍

11. A gemstone as per claim 1, wherein a polishing angle associated with said cutlet pavillion facet is 44,26°.

12. A gemstone as per claim 1, wherein a polishing angle associated with said third half facet is 39.25°.

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