Torous ring gemstone and method for making same

Details Torous ring gemstone and method for making same Torous ring gemstone and method for making same

1996-12-30

1998-03-03

Purol, David M.

Jewelry

Gem

A44C 1700

Patent

active

057222614

ABSTRACT:
A method for cutting and faceting a gemstone to provide a torus ring shape and gemstone provided thereby. A complete or partial torus is generated having a hole bored in the center through the pavilion and the crown. The method works with various gemstone shapes including round, marquise, oval and cushion. In a round gemstone, a pair of parallel planes are lapped and a circular hole concentric with a vertical axis of the gemstone and perpendicular to the lapped planes is drilled through the gemstone crown and pavilion leaving a torus ring shape. Inside and outside pavilion faces are carved to the desired shapes. Outside and inside crown angles are cut or carved to the desired shape. The various surfaces are sanded and polished. If desired, another gemstone may be set into the center of the hole in the crown using goldsmithing and/or lapidary techniques.

REFERENCES:
patent: 2261958 (1941-11-01), Burri
patent: 2270210 (1942-01-01), Barbieri
patent: 2270270 (1942-01-01), Clare
patent: 2354067 (1944-07-01), Schmalz
patent: 2447407 (1948-08-01), Grain
patent: 4708001 (1987-11-01), Alburger
patent: 5090216 (1992-02-01), Waugh
patent: 5454234 (1995-10-01), Karmeli

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