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.

Summary of the Invention

The present invention provides for a novel gemstone cut wherein displays hearts or heart shapes when viewed from the top of the gem. The gemstone comprises a crown, a girdle, and a pavilion, each of which have facets disposed on them.

With respect to the crown in the present invention's gemstone cut, there are 41 facets in examples one and three in the present embodiment, further there are 49 facets in example 2, and are as follows, the crown comprises of a hexadecagonai table (0), which comprises of a singular facet, disposed around the table angled downwardly are either sixteen small-crown-break facets as shown in example 3, or eight smatl-erown-break facets (7), separated by a further eight iong-crown-break facets (8) set alternating between (7) thus shown for examples one, and two, In the preferred embodiment, the polishing angle of the either sixteen or eight small-crown-break facets (7) is between 25.0 ¹⁵ and 29.3 °, the latter appearing on the left and right of each small-crown-break facet respectively. The polishing angle for each iong-crown-break facets (8) is between 25,0 ° and 29.0 °, in the preferred embodiment, set below (7), and/or (8} and angled downwardly being divided into pairs by (7, and 8) are the first-half facets (5) the polishing angle for each first-half facets (5) is between 32.5" and 34,0°, set diagonally be!ow small- crown-break facets {7)and or Iong-crown-break facet (8), and above the girdle facet ^similarly dividing (5) into pairs is the upper girdle facet (6), the polishing angle for (6) is between 35.6" and 37.5°, thus completing the cut of the crown portion of the invention in the respective examples shown.

The girdle of the gemstone can be either faceted or ground and polished by small facets to form a round or any other externa! shape when viewed from the top of the gem. in the preferred embodiment, the girdle comprises of 16 facets (5). Each girdle full-facet comprises polishing angle at 90°, further as previously mentioned the girdle can be ground and further polished to a round shape, also set at 90° to the table.

With respect to the pavilion in the present invention's gemstone cut, in example one there are 32 facets, example two displays 24 facets, and example three displays 48 facets, in the present embodiment, when viewed from the bottom encircled to and rising from the girdle are, sixteen cutlet-pavilion facets (1), in the preferred embodiment the cutlet -pavilion facets (1), are polished at angles between 41.5° and 43.3°, placed between each second cutlet-pavilion facet (1), intercepting and dividing (1) into pairs are eight upper-cutlet-pavilion facets (2) the upper-cutlet-pavilion facets are polished at an angle between 40.0° and 41.7", this completes the pavilion cut of example two, further fo examples one and three there are eight iower-cutlet-paviiion facets (3) intercepting and separating (2) into singular facets intercepted by (1), and (3), the lower-cut!et-pavtlion facets (3} are polished at angles between 39.5° and 41.5 ^s , this completes the pavilion cut of example one, further for example three placed between the lower-cutiet-paviiion facets (3), and being divided into pairs by (3) are sixteen long-pavilion break facets (4) which are angled upwardly from the girdle at angles set between 33.7° and 39.50°, this completes the pavilion cut of example three.

Additionally, the gernstone of the present invention can be a precious or a semiprecious stone. In the preferred embodiment, the gernstone is a diamond.

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 gernstone cut as described in US patent 693,084 _* The patent provides for a diamond, or other precious stone having a series of quadrilateral facets, 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 quadriiateraf 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 fou 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 piane and formed by lateral surfaces of a pyramid. The angles between the lower facets and the girdle piane 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 feast 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 brilliafitized 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 cutfet 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 colli near 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 ^a .

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 a id 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 ( U S/ 2013./Q 146350 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 fulfils the purposes of the present invention. Nova Cut Gemstone and Methods for Cutting the Same Description of the Preferred Embodiments

While the invention is illustrated and described in three exampies of 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, three examples of 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 three alternate constructions and is not intended to limit the invention to the examples of 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 semiprecious 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 is for illustrative purposes only, and one skilled in the art can envision using other shapes (e.g., square with corner breaks, cushion shape, octagonal shape, square shape, oval shape etc.), and combinations of facets.

Figures 3a, 3b, and 3c collectively illustrate a side-view, top view, 3nd a bottom view showing the pavilion portion, the girdle, and the crown of example one of the said invention's gemstone in the preferred embodiment.

Figure 3a, illustrates a side view of example one of the gemstone of the preferred embodiment of the present invention.

Figure 3b, illustrates a top view of the crown of example one with various facets. The crown includes a flat table shaped tike a hexadecagon (0) and is disposed at the center of the top of the crown. Also disposed surrounding the table facet and diagonally extended on the side of crown are facets, which include smail-erown-break facets (7) also dispersed around the smaf!-crown-break facets (7) and set below are, first-half facets (5), and upper-girdle facets (6). As mentioned earlier, the hexadecagonal table is surrounded by sixteen smail-crown-break facets (7) (intercept between the table (0) and (5). in the preferred embodiment, smafl-crown-break facets (7) are angied downwardly at angles between 25.00" and 29.00°, the first-half facets (5 _. ) are angled downwardly at between 31.70 ^s and 34.50° from the plane of the hexadecagonal table at 0" (0), Additionally, eight upper-girdie-facets (6) are formed in- between the area formed by the first-half facets (intercepted between the girdle, 7 and 6),, and in the preferred embodiment, the upper-girdle facets (6) are angied downwardly at angles between 35.GQ°and 39,00° from the plane of the hexadecagonal table (0), alternately the upper-girdle facets (6) can be arranged in a compliment of sixteen facets forming into pairs separated by the first half facets (5} intercepted between the girdle, and (5), in the preferred embodiment the girdle facets are set at 90°,

Figure 3c, illustrates a bottom-view of the pavilion a of the present invention's gemstone. in the preferred embodiment, the cutlet-pavilion facet (1) of which there are sixteen and are angled upwardly from the girdle when viewed from the bottom of the gemstone and are set at angles between 40.10" and 42.7°, further intercepted by the cutlet pavilion facet are the upper-cutlet-pavilion facets (2) of which there are eight, in the preferred embodiment the upper-cutlet-pavilion facets (2) are angled upwardly from the girdle at angles between 40.00° and 41,90°, the upper-cutiet-paviiion facets are intercepted eight tower-cutlet-pavilion facets (3) which are set upwardly at angies between 37.00° and 41.70 °, this completes the cut and cutting process for the pavilion of example one of the preferred embodiment of the present invention.

Figure 3d, illustrates a top-view showing the crown portion of example one of the invention and the preferred percentages associated with each of the facets associated therein, in the preferred embodiment with a minimum table (0) spread of 45.0%, and a maximum spread of 55.5%, further, figure 3d displays the associated preferred spreads and a more specific range associated with each facet of example one of the present invention's gemstone ^' s crown.

Figure 3e, illustrates a bottom-view showing the pavilion portion of example one of the invention and the preferred percentages associated with each of the facets associated therein, in the preferred embodiment with a preferred minimum cutlet-pavilion facet spread of 27%, further, figure 3e displays the associated preferred spreads and a more specific range associated with each facet of example one of the present invention's gemstone ^' s pavilion.

It should be noted that the depths and heights given in Figures 3d, and 3e, 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 and associated percentage spreads cannot be used to restrict the scope of the present invention.

Figure 4a, illustrates a side view of example two of the gemstone of the preferred embodiment of the present invention. Figure 4b, illustrates a top view of the crown of example one with various facets. The crown includes a flat table shaped tike a hexadecagon (0) and is disposed at the centre of the top of the crown. Also disposed surrounding the table facet and diagonally extended on the side of crown are facets, which include small-crown-break facets (7) intercepted by aiternating long-crown-break facets (8) intermitting with srna!l-crown-break facets (7) also dispersed around the small-crown-break facets (7) and set below are, first-half facets (5),. and upper-girdle facets (6). As mentioned earlier, the hexadecagonal table is surrounded by eight small-crown-break facets (7) and eight long-crown -break facets (8) (intercept between the table (D), and (7)), or alternately can be displayed with sixteen smail-crown-break facets (7} (intercept between the table (0) and (5). in the preferred embodiment, small-crown-break facets (7) are angled downwardly at angles between 25,00° and 29.00 ^s , the long-crown-break facets are ang!ed downwardly at angles between 28.00° and 29.5Q ⁹ , the first-half facets {5} are angled downwardly at between 31,70° and 34.50" from the plane of the hexadecagonal table at 0° (0). Additionally, eight upper-girdle-facets (6) are formed in-between the area formed by the first-half facets (intercepted between the girdle, 7 and 6},, and I the preferred embodiment, the upper-girdle facets (6) are angled downwardly at angles between 35.00°and 3.9.00* from the plane of the hexadecagonal table (0), alternately the upper-girdle facets (6) can be arranged in a compliment of sixteen facets forming into pairs separated by the first half facets (5) intercepted between the girdle, and (5), in the preferred embodiment the girdle facets are set at 90°.

Figure 4c, illustrates a bottom-view of the pavilion a of the present invention's gemstone. !n the preferred embodiment, the cutlet-pavilion facet (1) of which there are sixteen and are angled upwardly from the girdle when viewed from the bottom of the gemstone and are set at angles between 40.10° and 42,7°, further intercepted by the cutlet pavilion facet are the upper-cutiet-pavilio facets (2) of which there are eight, in the preferred embodiment the upper-cutiet-pavilion facets (2) are angled upwardly from the girdle at angles between 40.00° and 41.90", this completes the cutting process and cut for example two of the preferred embodiment of the present invention.

Figure 4d, illustrates a tap-view showing the crown portion of example one of the invention and the preferred percentages associated with each of the facets associated therein, in the preferred embodiment with a minimum table (0) spread of 47.0%, and a maximum spread of 54.0%, further, figure 4d displays the associated preferred spreads and a more specific range associated with each facet of example two of the present invention's gemstone ^' s crown.

Figure 4e, illustrates a bottom-view showing the pavilion portion of example one of the invention and the preferred percentages associated with each of the facets associated therein, in the preferred embodiment with a preferred minimum cutlet-pavilion facet spread of 27%, further, figure 4e displays the associated preferred spreads and a more specific range associated with each facet of example two of the present invention's gemstone ^' s pavilion.

Figures 4a, 4b, and 4e collectively illustrate a side-view, top view, and a bottom view showing the pavilion portion, the girdle, and the crown of example two of the said invention's gemstone in the preferred embodiment.

It should be noted that the depths and heights given in Figures 4d, and 4e, 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 and associated percentage spreads cannot be used to restrict the scope of the present invention.

Figure 5a, illustrates a side view of example three of the gemstone of the preferred embodiment of the present invention.

Figure 5b, i!iustrates a top view of the crown of example three with various facets. The crown includes a flat table shaped like a hexadecagon (0) and is disposed at the centre of the top of the crown. Also disposed surrounding the table facet and diagonally extended on the side of crown are facets, which include smail-crown-bf eak facets (7), also dispersed around the small-crown-break facets (7} and set below are, first-half facets {5}, and upper-girdle facets (6), As mentioned earlier, the hexadecagonal tabie is surrounded by sixteen small-crown-break facets (7) (intercept between the table (0) and (5). In the preferred embodiment, smafl-crown-break facets (7) are angled downwardly at. angles between 25.00° and 29.00", the first-half facets (5) are angled downwardly at between 31.70° and 34.50° from the plane of th hexadecagonal table at 0* (0). Additionally, eight upper-girdle-facets (6) are formed in- between the area formed by the first-half facets (intercepted between the girdle, 7 and 6)., and In the preferred embodiment, the upper-girdle facets (6) are angied downwardly at angles between 35.00°and 39.00* from the plane of the hexadecagonal tabie (0), alternately the upper-girdle facets (6) can be arranged in a compliment of sixteen facets forming into pairs separated by the first half facets (5) intercepted between the girdle, and (5), in the preferred embodiment the girdle facets are set at 90°.

Figure 5c, illustrates a bottom-view of the pavilion a of the present invention's gemstone. in the preferred embodiment, the cutlet-pavilion facet (1) of which there are sixteen and are angied upwardly from the girdle when viewed from the bottom of the gemstone and are set at angles between 40.10° and 42.7°, further intercepted by the cutlet pavilion facet are the upper-cutlet-pavilion facets (2) of which there are eight, in the preferred embodiment the upper-cutlet-pavilion facets (2) are angied upwardly from the girdle at angles between 40.00° and 41,90°, the upper-cutlet-pavilion facets are intercepted eight lower-cutSet-pavtiion facets (3) which are set upwardly at angles between 37.00° and 41.70 * the lower-cutlet-pavilion facets are intercepted by sixteen long-pavilion-break facets (4) which are angled upwardly from the girdle at angles set between 33.7° and 39.50°, this completes the cutting process and cut for example three of the preferred embodiment of the present invention.

Figures 5a, 5b, and 5c coiiectiveiy illustrate a side-view, top view, and a bottom view showing the pavilion portion, the girdle, and the crown of example one of the said invention's gemstone in the preferred embodiment.

Figure 5d, illustrates a top-view showing the crown portion of example one of the invention and the preferred percentages associated with each of the facets associated therein, in the preferred embodiment with a minimum table (0) spread of 45.0%, and a maximum spread of 54.%, further, figure 3d displays the associated preferred spreads and a more specific range associated with each facet of example one of the present invention's gemstone ^' s crown. Figure 5e, iiiustrates a bottom-view showing the pavilion portion of example one of the invention and the preferred percentages associated with each of the facets associated therein, in the preferred embodiment with a preferred minimum cutlet-pavilion facet spread of 27%, further, figure 3e displays the associated preferred spreads and a more specific range associated with each facet of example one of the present invention ^' s gemstone ^' s pavilion.

Figures 5a, 5 b, and 5c coliectively illustrate a side-view, top view, and a bottom view showing the pavilion portion,, the girdle, and the crown of example three of the said invention's gemstone in the preferred embodiment.

ft should be noted that the depths and heights given in Figures 5d, and 5e, 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 and associated percentage spreads cannot be used to restrict the scope of the present invention.

Figures 5a, and 6b, collectively illustrate a top view of example 1 of the gemstone of the present invention.

Figures 7a, 7b, and 7c collectively illustrate example 2 of the cut displaying the unique heart shapes pattern.

Figures 8a, 8b and 8c collectively illustrate example 3 of the cut displaying the unique heart shapes pattern.

Figure 9a, and 9b collectivel illustrate the cutlet-pavilion facet, cutting process and dimensions of the completed cut.

Figures 10a, and 10b collectively iiiustrates the upper-cutlet facet, cutting process and dimensions of the completed cut.

Figures 11a, and 11 b collectively iiiustrates the lower-cutlet facet cutting process and dimensions of the completed cut

Figures 12a, and 12 b coliectively illustrates the cutlet -facet cutting process and dimensions of the completed pavilion cut

Figure 13a, and 13 b collectively illustrates the first-half facet cutting process and dimensions of the completed cut

Figurel4a, and 14b collectively iiiustrates the upper-girdle facet cutting process and the dimensions of the completed cut of the completed cut,

Figure 14c illustrates the alternate twin upper-girdle facets and dimensions of the completed cut as shown in example 1, Figures 15a, and 15b collectively illustrates the smalt crown break facet cutting process and ditnensions of the completed cut

Figures 16a., and 16b collectively illustrate the alternate long crown-break facets of the completed cut, as we!S as the alternate twin upper-girdle facets and dimensions as used in example 1,

Figure 17 illustrates the table facet cut, and dimensions of the completed crown cut.

Figure 18 illustrates a ray traced top view of the gemstone of the present in vention at a verage inclination angle of 0°

Figure 19 illustrates a ray traced top view of the gemstone of the present in vention at average inclination angle of 10°

Figure 20 illustrates a ray traced top view of the gemstone of the present invention at average inclination angle of 20°

Figure 21 illustrates a ray traced top view of the gemstone of the present in vention at average inclination angle of 30°

Table 1

Notably, the abovementioned embodiment is approximately 26% brighter.

Conclusion

A system and method has been shown in the above three examples and embodiments for the effective implementation of this unique and nove! new gemstone cut. While various preferred embodiments have been shown and described, it wit! be understood that there is no intent to limit the invention by such disclosure, but rather, it is intended to cover ail modifications and alternate constructions failing 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, or the pattern of facets specified in the said drawings.

Brief Description of the Drawings

Figure 1 iiiustrates a general structure associated with a diamond.

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

Figures 3a, 3b, and 3c collectively illustrate a side, top, and bottom view of example 1 of the present invention's gemstone crown and table, including the girdle.

Figures 4a, 4b, and 4c, collectively illustrate a side, top, and bottom view of example 2 of the present invention's, gemstone cut.

Figures 5a, 5b, and 5c collectively illustrate a side, top, and bottom view of example 3 of the present invention's, gemstone cut.

Figures 3d, 3e, 4d, 4e, 5d and 5e collectively illustrate views showing the preferred facet dimensions of the completed cuts

Figures 6a, and 6b collectively illustrate a ray traced mode! example 1 of the present in vention displaying the unique heart shapes pattern.

Figures 7a, 7b, and 7c collectively illustrate a ray traced model of example 2 of the present invention displaying the unique heart shapes pattern.

Figures 8a, 8b and 8c collectively illustrate a ray traced model of example 3 of the present invention displaying the unique heart shapes pattern.

Figures 9a, and 9b collectively illustrate the cutlet-pavilion facet, cutting process and dimensions of the completed cut.

Figures 10a, and 10b collectively illustrates the upper-cutlet facet, cutting process and dimensions of the completed cut.

Figures 11a, and 11 b collectivel iiiustrates the bwer-cutlet facet cutting process and dimensions of the completed cut.

Figures 12a, and 12 b collectively illustrates the cutlet -facet cutting process and dimensions of the completed pavilion cut.

Figure 13a, and 13 b collectively illustrates the first-haif facet cutting process and dimensions of the completed cut.

Figure 14a, and 14b collectively illustrates the upper-girdle facet cutting process and the dimensions of the completed cut.

Figure 14c illustrates the alternate twin upper-girdle facets and dimensions of the completed cut as shown in example 1. Figures 15a, and 15b collectively illustrates the smalt crown break facet cutting process and ditnensions of the completed cut.

Figure 16a, and 16b collectively illustrates the alternate tong-crown-break facets of the completed cut, as we!l as the alternate twin upper-girdle facets and dimensions as used in example one,

Figure 17 illustrates the table facet cut, and dimensions of the completed cut.

Figure 18 illustrates a ray traced image of the gemstone showing light return response at 0° average i clination.

Figure 19 illustrates a ray traced image of the gemstone showing light return response at 10° average inclination

Figure 20 illustrates a ray traced image of the gemstone showing light return response at 20° average inclination

Figure 21 illustrates a ray traced image of the gemstone showing light return response at 30 ^* average inclination