Patent ID: 6615611
Filing Date: 2003-09-09
Classification: A44C

Abstract:
A high yield diamond comprising:a generally planar table lying in a table plane; a circumferential girdle lying in a girdle plane, the table plane being substantially parallel to the girdle plane; a plurality of main crown brillianteering facets lying between the table and girdle at an angle between 23Â° and 40Â°; a pavilion lying between the girdle and a culet; the pavilion comprising: a plurality of upper pavilion brillianteering facets lying between the girdle and a first pavilion rib line; a plurality of lower pavilion brillianteering facets lying between the rib line and the culet; the upper pavilion facets lying at an angle of between 50Â° and 72Â° relative to the girdle plane; the lower pavilion facets lying at an angle of between 35Â° and 45Â° relative to the girdle plane; and the rib line lying at a point between one fifth and four fifths of the distance between the girdle and the culet.