Brilliantized step cut stone with faceted crown

Details Brilliantized step cut stone with faceted crown Brilliantized step cut stone with faceted crown

1977-02-04

1978-10-10

Shay, F. Barry

Jewelry

Gem

A44C 1700

Patent

active

041189507

ABSTRACT:
A brilliantized step cut diamond has a straight edged polygonal shaped girdle with side and corner facets, a crown with a table and a table-and-girdle breaks which are faceted; and a pyramidal base having a point culet, a culet break and a girdle break with ridges extending from the culet to the corner 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 colinear with the edge of a corner facet and an apex at a ridge.

REFERENCES:
patent: 138314 (1873-04-01), Bruhl
patent: 270018 (1883-01-01), Chevassus-Clement
patent: 3394692 (1968-07-01), Tirakian

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