Diamond cut

Abstract

A new method of cutting a gemstone such as a diamond, known as the “Galush” cut, is provided. According to an embodiment of the invention, the “Galush” cut gemstone has a crown portion, a pavilion portion and a girdle portion provided between the crown portion and pavilion portion. The crown portion includes an upper surface having a shape configured by first, second and third boundaries, which form a perimeter around the crown of the gemstone. Each of the first and second boundaries has first and second ends, and the third boundary is arc-shaped having first and second edges. The first and second edges of the arc-shaped boundary adjoin the first end of each of the first and second boundaries and the second end of each of the first and second boundaries meet at a common tip.

1 . A gemstone comprising a crown portion, a pavilion portion and a girdle portion provided between the crown portion and pavilion portion, said crown portion comprising: 
 an upper surface having a shape configured by first, second and third boundaries, each of said first and second boundaries having a first and second ends, said third boundary being arc-shaped and having first and second edges; and    wherein said first and second edges of the arc-shaped boundary adjoin the first end of each of said first and second boundaries and wherein the second end of each of said first and second boundaries meet at a common tip, wherein said first, second and third boundaries form a perimeter around the gemstone.    
   
   
       2 . The gemstone according to  claim 1 , wherein said crown portion further comprises: 
 a plurality of facets formed from a plurality edges, each edge adjoining two other edges around the perimeter.    
   
   
       3 . The gemstone according to  claim 2 , wherein said plurality of edges is an odd number of edges.  
   
   
       4 . The gemstone according to  claim 2 , wherein said plurality of facets comprises substantially rhomboidal facets.  
   
   
       5 . The gemstone according to  claim 2 , wherein said crown portion further comprises a plurality of secondary star facets.  
   
   
       6 . The gemstone according to  claim 1 , wherein said pavilion portion comprises a plurality of facets formed from a plurality edges, each edge having a common end.  
   
   
       7 . The gemstone according to  claim 6 , wherein said plurality of edges is an odd number of edges.  
   
   
       8 . The gemstone according to  claim 6 , wherein said wherein said plurality of facets form a shape comprising one of a group of shapes including a substantially five-pointed star or a seven-pointed star.  
   
   
       9 . The gemstone according to  claim 6 , wherein said pavilion portion comprises substantially rhomboidal facets.  
   
   
       10 . The gemstone according to  claim 2 , wherein said pavilion portion further comprises a culet base and a plurality of facets extending from the culet base to the girdle portion.  
   
   
       11 . The gemstone according to  claim 10 , wherein said wherein said plurality of facets form a shape comprising one of a group of shapes including a substantially four-pointed star and a substantially triangular shape.  
   
   
       12 . A method for cutting a gemstone, said gemstone comprising a crown portion, a pavilion portion and a girdle portion provided between the crown portion and pavilion portion, the method comprising the steps of: 
 configuring the perimeter of the crown of the gemstone in a shape comprising a surface having first, second and third boundaries, each of the first and second boundaries having a first and second ends, said third boundary being arc-shaped having and having first and second edges; and    wherein said first and second edges of the arc-shaped boundary adjoin the first end of each of said first and second boundaries and wherein the second end of each of said first and second boundaries meet at a common tip, said first, second and third boundaries forming the perimeter.    
   
   
       13 . The method according to  claim 12 , further comprising the steps of: 
 forming a first plurality of edges on the crown of the gemstone, each of said first plurality of edges adjoining two other of said first plurality of edges; and    forming a second plurality of edges on the pavilion of the gemstone, each of said second plurality of edges adjoining two other of said second plurality of edges.    
   
   
       14 . The method according to  claim 13 , wherein said first plurality of edges comprises an odd number of edges.  
   
   
       15 . The method according to  claim 13 , further comprising the step of forming a plurality of facets cut from said first plurality of edges.  
   
   
       16 . The method according to  claim 15 , further comprising the step of forming a plurality of secondary star facets.  
   
   
       17 . The method according to  claim 13 , wherein said second plurality of edges comprises an odd number of edges.  
   
   
       18 . The method according to  claim 17 , further comprising the step of forming a plurality of facets cut from said second plurality of edges, wherein each edge has a common end.  
   
   
       19 . The method according to  claim 18 , wherein said wherein said plurality of facets form a shape comprising one of a group of shapes including a substantially five-pointed star or a seven-pointed star.  
   
   
       20 . The method according to  claim 18 , wherein said plurality of facets comprise substantially rhomboidal facets.  
   
   
       21 . The method according to  claim 13 , wherein said pavilion portion further comprises a culet base, the method further comprising the step of forming a plurality of facets extending from the culet base to the girdle portion.  
   
   
       22 . The method according to  claim 21 , wherein said plurality of star facets form a shape comprising one of a group of shapes including a substantially four-pointed star and a substantially triangular shape.