Jewelry – Gem
Patent
1976-05-27
1977-05-03
Shay, F. Barry
Jewelry
Gem
A44C 1700
Patent
active
040206491
ABSTRACT:
A step cut stone with a straight edged polygonal shaped girdle has a generally pyramidal base and a crown with at least girdle and table breaks wherein at least one of these breaks is cut with triangular shaped facets.
REFERENCES:
patent: 138314 (1873-04-01), Bruhl
patent: 2265316 (1941-12-01), Schenck
patent: 3796065 (1974-03-01), Watermeyer
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