Tiffany & Company 18K Black Onyx Signet Style Ring — DeWitt's Diamond & Gold Exchange

Gently Used 18 Karat Yellow Gold One Oval Black Onyx Stone 15 grams Size 11.5 Estimated Retail: $2,900.00 100% Authentic Guaranteed!! Ships for free

Tiffany & Company 18K Black Onyx Signet Style Ring — DeWitt's Diamond & Gold Exchange

Tiffany and Company Gents yellow Gold and Onyx Ring at 1stDibs

Tiffany and Company Gents yellow Gold and Onyx Ring at 1stDibs

Gently Used 18 Karat Yellow Gold One Oval Black Onyx Stone 15 grams Size 11.5 Estimated Retail: $2,900.00 100% Authentic Guaranteed!! Ships for free

Tiffany & Company 18K Black Onyx Signet Style Ring — DeWitt's Diamond & Gold Exchange

A classic Art Deco Tiffany and Co signet ring modeled in 18K gold, featuring a smooth carved onyx. Weighing a solid 7.7 grams, this unisex ring is

Vintage Tiffany & Co Onyx and 18K Gold Signet Ring

Onyx Rings Tiffany & Co.

Tiffany and Co. 18 Karat Yellow Gold Makers Black Onyx Signet Ring

Tiffany & Company Rings — DeWitt's Diamond & Gold Exchange

Tiffany & Company Rings — DeWitt's Diamond & Gold Exchange

Tiffany and Company Gents yellow Gold and Onyx Ring at 1stDibs

Tiffany & Co. Black Onyx Ziegfeld Daisy Ring Size 6 St Silver

Tiffany & Company Rings — DeWitt's Diamond & Gold Exchange