Patent ID: 6430963
Filing Date: 2002-08-13
Classification: A44C

Abstract:
A gemstone cut, wherein said gemstone cut is a brilliant cut gemstone, comprisinga) a brilliant cut crown located on an upper side of a girdle, said girdle having a plane and comprising n sides, wherein n is an integer; and b) a pavilion located on a lower side of said girdle comprising: a culet; rib lines, wherein the number of said rib lines is said n; said rib lines subdivide said pavilion into said n parts; said rib lines run from said girdle and converge at said culet; lower girdle facets, wherein the number of said lower girdle facets is said n; said lower girdle facets are shaped as m-sided polygons, with one side of each of said m-sided polygons forming one side of said girdle and where m is an integer number more than three and less than said n; lower corner facets of said pavilion, wherein the number of said lower corner facets of said pavilion is equal to twice said n; said lower corner facets of said pavilion are shaped as triangles, where said triangles have their bases along said rib lines on opposite sides of each of said rib lines; said lower corner facets being spaced from both of said culet and said girdle; and each of said lower corner facets touching two others of said lower corner facets.