Abstract:
A novel gemstone cut that has 162 facets such that the crown has 65 separate facets and the pavilion has 97 separate facets.

Description:
INDEX TO RELATED APPLICATIONS 
     This application claims benefit of U.S. Provisional Patent Application No. 61/061,727, filed Jun. 16, 2008 the disclosure of which is incorporated herein by reference in its entirety. 
    
    
     BACKGROUND OF THE INVENTION 
     Gemstones are generally cut with facets forming the exterior surface of the stone. The surfaces of the facets are then polished to obtain the brilliance, dispersion and/or scintillation desired from the gem. Facets cut in a gemstone may also form a geometric figure or design. The prior art is replete with teachings making gems from gemstones by cutting facets in the surface of the stone and then polishing the surface of the facet to obtain the brilliance and scintillation desired, when the gem is exposed to light. Facets are usually cut in the crown and in the pavilion of the stone. 
     The present invention provides a gemstone that comprises a gemstone having 162 facets. Many commercially available diamonds typically have about 58 facets. The increased number of facets of the gemstone of the present invention produces a cut stone that is more desirable. 
     BRIEF SUMMARY OF THE INVENTION 
     The present invention is a novel gemstone cut that has 162 facets. The facets are constructed and arranged such that the crown has 65 separate facets and the pavilion has 97 separate facets. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a top view of the gemstone. 
         FIG. 2  is a bottom view of the gemstone. 
         FIG. 3  is a side view of the gemstone, where girdle  22   a  is shown enlarged and not in proportion to crown  21  and pavilion  23 . 
         FIG. 4  is a partial side cut away along section line J-J from  FIG. 1  showing angular orientation of facet cuts. 
         FIG. 5  is a partial side cut away along section line K-K from  FIG. 1  with showing angular orientation of facet cuts 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     The gemstone of the present invention is preferably a diamond. In a preferred embodiment, the following are preferred embodiments of the configurations of the gemstone: 
     
       
         
               
               
               
             
           
               
                   
                   
               
             
             
               
                   
                 Girdle: 
                 2.0% to 5.5% 
               
               
                   
                 Table: 
                 54% to 62% 
               
               
                   
                 Crown Angle 1: 
                 34° to 36° 
               
               
                   
                 Crown Angle 2: 
                 30° to 32° 
               
               
                   
                 Crown Height: 
                 13.5% to 16%   
               
               
                   
                 Pavilion Angle: 
                 40.5° to 41.5° 
               
               
                   
                 Pavilion Mains 1: 
                   43% to 44.5% 
               
               
                   
                 Total Height: 
                 58% to 66% 
               
               
                   
                   
               
             
          
         
       
     
     The angles and percentages are expressed as is commonly done in gemology. The Gemstone  10  has table  11  on its uppermost surface. Circumferraly surrounding the table are an interlocking triangular arrangement of alternating star facets  12  and first crown facets  13 . Circumferraly surrounding the first crown facet cuts  13  are a second triangular arrangement of alternating second crown facets  14  and upper half facets  15 . The lower portion of gemstone  10  is a pavilion  23  having a series of circumferral triangular first lower half cut facets  16 . Adjoining each first lower half cut facets  16  are kite shaped first pavilion main cut facets  17  which are adjacent to triangular pairs of second lower half cut facets  18 . Adjoining each of said second lower half cut facets  18  are substantially rhomboidal second pavilion main cut facets  19  that surround a culet  20 . 
     The lower portion of gemstone  10  is a pavilion  23  having a series of circumferral triangular first lower half cut facets  16 . Adjoining each first lower half cut facets  16  are kite shaped first pavilion main cut facets  17  which are adjacent to triangular pairs of second lower half cut facets  18 . Adjoining each of said second lower half cut facets  18  are substantially rhomboidal second pavilion main cut facets  19  that surround a cutlet  20 . 
     The table  11  is a 16-sided polygon, sometimes also called a hexadecagon. In a preferred embodiment, table  11  is a substantially regular hexadecagon. A regular hexadecagon has equal sides. The hexadecagon configuration of table  11  of the present invention is formed by arrangement of star facets  12  such that each star facets  12  has a single edge  12   a  successively positioned around table  11  such that single edge  12   a  defines a portion of the perimeter of hexadecagon table  11 . Each single edge  12   a  of star facets  12  defines a portion of the perimeter of table  11  and is approximately equal in length to each of the other single edge  12   a  sides of each said star facets  12 . 
     Each of star facets  12 , first crown facets  13 , second crown facets  14  and upper half facets  15  are triangular. They are preferably each substantially isosceles triangles. In one embodiment, they may be a combination of isosceles and equilateral triangles. Isosceles triangles, as is known, have two equal sides. Equilateral triangles, as is known, have three equal sides. 
     First lower half cut facets  16  are triangular and are arranged such that each first lower half cut facets  16  shares one side  16   a  with an adjacent first lower half cut facets  16  and each lower half cut facets  16  shares one point  16   b  with an adjacent first lower half cut facets  16 . 
     Each first pavilion main cut facets  17  is a kite shaped facet. 
     A kite configuration, as is known in the art and shown by the diagram below, is a planar convex quadrilateral consisting of two adjacent sides of length a and the other two sides of length b. A rhombus configuration is a special type of kite. 
     
       
                 
         
             
             
         
      
     
     A kite is shown above. The area of a this kite is given by 
               A   =       1   2     ⁢   pq       ,         
where p and q are the lengths of the polygon diagonals, which are perpendicular.
 
     Each of second lower half cut facets  18  are triangular and said second lower half cut facets  18  are arranged in pairs, as seen in  FIG. 2 , such that each pair of second lower half cut facets  18  share an adjacent side  18   a  which is the longest side of the triangle shaped second lower half cut facets  18 . Each arranged pair of second lower half cut facets  18  forms a substantially rhomboidal configuration. 
     As shown in  FIG. 3 , the gemstone  10  has a crown  21  that is the upper portion of gemstone  10  above a circumferal girdle  22   a . Below girdle  22   a  is a pavilion  23 . Table  11  has a diameter T. Gemstone  10  has an overall diameter L defined by opposing edges of girdle  22   a . Each of table  11  diameter T and overall diameter L are along line K-K from  FIG. 1 . Crown  21  has a height C. Pavilion  23  has a height P. The dimensions of gemstone  10  in regards to any of diameter T, diameter L, height C, and height P can vary to accommodate  162  facets as contemplated in the present invention. 
     Facet Configurations 
       FIG. 1  is a top view of gemstone  10 . Gemstone  10  can be any suitable dimension, size, or weight. 
     Gemstone  10  generally includes a crown  21  and a pavilion  23 . Crown  21  includes the top or upper portion of gemstone  10 , while pavilion  23  includes the bottom or lower portion of gemstone  10 . In a preferred embodiment, a girdle  22   a  is located between crown  21  and pavilion  23 . Both crown  21  and pavilion  23  include a plurality of flat facet surfaces as described in detail below. 
     Facets described herein can be substantially or generally flat. Facets can also be formed into various geometric shapes. These shapes can be described using precise terms although the actual form of the shape may vary. For example, a triangular facet can include a substantially or generally triangular shape including three sides. The triangular facet may include straight or arcuate sides. Further, the combined summation of angles of the three vertices could be about 180°, such as, for example, 160° or 200°. Similar variations could occur with other parameters of the triangular facet, or any other facet geometry described herein. These and other geometries, angles, configurations, or arrangements of facets described herein are general descriptions and not precise mathematical definitions. For example, angles described herein can include a range of variation, such as, for example, +/−¼°, +/−½°, +/−1°, or +/−2°, depending upon material properties, such as the refractive index. Also, the term radially can include arrangements that are generally or approximately radial in distribution. 
       FIG. 1  is a top view of gemstone  10 , showing crown  21 . As shown in  FIG. 1 , crown  21  includes a table facet  11  and various facets  12 ,  13 ,  14 , and  15  arranged in a substantially symmetrical pattern around the perimeter of table facet  11  and encompassing the surface perimeter of crown  21 . Crown  21  includes four sets of generally symmetrical facets  12 ,  13 ,  14 , and  15 . Star facets  12  and first crown facets  13  are circumferal about the perimeter of table  11 . Table  11  is defined by successive edge portions  12   a  of star facet  12  disposed about the perimeter of table  11  wherein the perimeter of table  11  is defined by single edge  12   a . In a preferred embodiment, there are sixteen (16) separate star facets  12  about table  11  and star facets  12  are arranged such that single edge  12   a  of star facets  12  are successively placed and the entire perimeter of table  11  is defined by the sum of all successive single edge  12   a.    
     As shown in  FIG. 1 , each star facet  12  is in contact with two first crown facets  13  such that two adjacent first crown facets  13  share a common boundary  13   a  with a single star facet  12 . There are sixteen (16) separate first crown facets  13 . A boundary, as described herein, can include a point or edge, wherein the edge can be arcuate or linear. Boundaries of facets may or may not be symmetric. In a preferred embodiment, boundaries are substantially symmetric. 
     Crown  21  also includes a plurality of second crown facets  14  that generally extend around and space apart from the perimeter of facet table  11  and include a total of sixteen separate second crown facets  14 . As shown in  FIG. 1 , each second crown facets  14  shares a common boundary point  14   a  with adjacent second crown facets  14 . Each second crown facets  14  further shares a common boundary  14   b  with a single adjacent first crown facets  13 . 
     Crown  21  includes a plurality of first upper half facets  15 . The plurality of upper half cut facets  15  generally extend around the perimeter and space apart from of facet table  11 , and upper half facets  15  include a total of sixteen separate facets. As shown in  FIG. 1 , each upper half facet  15  shares a common boundary  15   a  with two adjacent second crown facets  14 . 
       FIG. 2  is a bottom view of gemstone  10 , showing pavilion  23 . As shown in  FIG. 2 , pavilion  23  includes various facets  16 ,  17 ,  18 ,  19  arranged in a generally symmetrical substantially circular pattern on pavilion  23 . A plurality of first lower half cut facets  16  have at least one boundary side  16   a  in common with adjacent first lower half cut facets  16  and one boundary  16   c  in common with lower border  22   b  of girdle  22   a . Lower border  22   b  of girdle  22   c  defines the upper perimeter of pavilion  23  and the upper border  22   a  of girdle  22   c  defines the lower perimeter of crown  21 . The plurality of second crown facets  14  are arranged to extend generally around the circumference of the uppermost part of crown  21 , and includes a total of sixteen separate second crown facets  14 . As shown in  FIG. 2 , each first lower half cut facets  16  is in contact with an adjacent first lower half cut facets  16  such that two adjacent first lower half cut facets  16  share a common boundary being side  16   a . There are thirty two separate first lower half cut facets  16 . A common boundary can include an edge, adjacent side boundary, or a point boundary. As seen in  FIG. 2 , two adjacent first lower half cut facets  16  share a common boundary point  16   b  opposite shared common boundary  16   a.    
     Pavilion  23  includes a plurality of first pavilion main cut facets  17 . As seen in  FIG. 2 , and discussed above, said plurality of first pavilion main cut facets  17  have a kite geometric configuration. Said plurality of first pavilion main cut facets  17  are arranged to extend generally around the perimeter of pavilion  23 , with long sides  17   b  being arranged in a radial relationship with culet  20 . Pavilion  23  includes sixteen first pavilion main cut facets  17 . As shown in  FIG. 2 , each first pavilion main cut facet  17  shares a common boundary  17   a  with adjacent first lower half cut facets  16 . There are sixteen first pavilion main cut facets  17 . Additionally, as seen in  FIG. 2 , first pavilion main cut facets  17  share a common boundary  17   b  with adjacent second lower half cut facets  18 . 
       FIGS. 4 and 5  show a partial cut away of gemstone  10 .  FIG. 4  shows the angular orientation of facets  12 ,  15 ,  16 , and  18 . Reference lines A, B, D, and E are all parallel and represent horizontal planes with respect to gemstone  10 . Reference lines A, B, D, and E are substantially parallel to table  11 . Table  11  is substantially flat however depending on the cut of an individual gemstone  10 , may have a slight pitch. 
       FIG. 5  is a partial side view along section line K-K from  FIG. 1  The angular inflections shown in  FIGS. 4 and 5  are depicted as demonstrative and not necessarily drawn to scale. 
     In a preferred embodiment, in  FIG. 4 , star facets  12  are formed at an angle r approximately of about 30-32° relative to the horizontal plane A of gemstone  10 . Upper half facets  15  are formed at an angle x approximately of about 34-36° relative to the horizontal plane B of gemstone  10 . Angle z is the angular inflection formed by the angular differential between the angle r of star facets  12  and the angle x of upper half facets  15 . First lower half cut facets  16  are formed at an angle s approximately of about 30-32° relative to the horizontal plane D of gemstone  10 . Second lower half cut facets  18  are formed at an angle t approximately of about 34-36° relative to the horizontal plane E of gemstone  10 . Angle f is the angular inflection formed by the angular differential between the angle s of first lower half cut facets  16  and the angle t of second lower half cut facets  18 . 
     In a preferred embodiment, in  FIG. 5 , first crown facets  13  are formed at an angle u approximately of about 34-36° relative to the horizontal plane A of gemstone  10 . Second crown facets  14  are formed at an angle y approximately of about 40-41° relative to the horizontal plane B of gemstone  10 . Angle q is the angular inflection formed by the angular differential between the angle u of first crown facets  13  and the angle y of second crown facets  14 . First pavilion main cut facets  17  are formed at an angle v approximately of about 34-36° relative to the horizontal plane D of gemstone  10 . Second pavilion main cut facets  19  are formed at an angle w approximately of about 40-41° relative to the horizontal plane E of gemstone  10 . Angle f is the angular inflection formed by the angular differential between the angle v of first pavilion main cut facets  17  and the angle w of second pavilion main cut facets  19 . 
     Pavilion  23  includes a plurality of second lower half cut facets  18 . As seen in  FIG. 2 , and discussed above, each of said plurality of second lower half cut facets  18  have a triangular configuration. Each of said plurality of second lower half cut facets  18  are arranged to extend generally around the perimeter of pavilion  23  and are spaced radially from girdle  22   a . Pavilion  23  includes thirty two second lower half cut facets  18 . As shown in  FIG. 2 , second lower half cut facets  18  share a common boundary  18   a  with a single adjacent second lower half cut facets  18 . As also seen in  FIG. 2 , each second lower half cut facets  18  shares a common point  18   b  with a single adjacent second lower half cut facet  18 . There are thirty two (32) second lower half cut facets  18 . Additionally, as seen in  FIG. 2 , each second lower half cut facets  18  shares a common boundary  17   b  with a single adjacent first pavilion main cut facets  17  and each second lower half cut facets  18  shares a common boundary  18   c  with a single adjacent second pavilion main cut facets  19 . 
     Pavilion  23  includes a plurality of second pavilion main cut facets  19 . As seen in  FIG. 2 , said second pavilion main cut facets  19  have a rhomboidal configuration. A rhombus, as discussed above, is a type of kite geometric configuration. The rhombus has four equal sides. Each of said plurality of second pavilion main cut facets  19  are arranged to extend around the perimeter of pavilion  23 . Pavilion  23  further includes sixteen (16) second pavilion main cut facets  19  radially spaced around pavilion  23  adjacent to and touching facet  20 . As shown in  FIG. 2 , each second pavilion main cut facets  19  shares a common boundary  19   a  with two adjacent second pavilion main cut facets  19 . Boundary  19   a  being the shared boundary with two successive second pavilion main cut facets  19 . 
     While the invention has been described in its preferred form or embodiment with some degree of particularity, it is understood that this description has been given only by way of example and that numerous changes in the details of construction, fabrication, and use, including the combination and arrangement of parts, may be made without departing from the spirit and scope of the invention.