Tiffany & Co Oval Cut Diamond & Black Onyx Ring 1754 French Art Deco engagement ring

French Art Deco engagement ring set with a step emerald-cut diamond weighing approximately 1

Inspiration drawn from nature was especially popular during the Art Nouveau era

66 carat EGL certified old mine brilliant cut diamond with H-I color and SI1 clarity

The opals are particularly vibrant

15 carats with EGL certificate stating the diamond is H-I color/VS2 clarity

Tiffany & Co Oval Cut Diamond & Black Onyx Ring 1754 French Art Deco engagement ringArt Deco Tiffany & Co ring centering on an oval cut diamond weighing approximately 0. 90 carat with an EGL certificate stating the diamond is E F color VS1 clarity, surrounded by 8 fancy cut black onyx and 20 single cut diamonds. Set in platinum. Signed Tiffany & Co. Circa 1920. Onyx and diamond rings are synonymous with the Art Deco period. This is vintage Tiffany at it's finest. The profile elongates the hand. Diamond and gold mining has caused