Oval Diamond Cocktail Ring, circa 1920.

Art Deco diamond cocktail ring. Diagonally set with two square step cut diamonds in open back rubover settings with a combined weight of 1.0...

Diamond cocktail ring. Set with one round old cut diamond in an open back claw setting with an approximate weight of 1.05 carats, further set with one round old cut diamond in an open back claw setting with a weight of 1.00 carats, further adorned with two round star top diamonds in open back grain settings with a combined weight of 0.20 carats. The total approximate diamond weight is 2.25 carats, to an openwork geometric design, featuring curving claws, polished edges and fancy open backholing, flanked by broad raised shoulders which taper through to a solid flat ribbed shank...

Diamond cocktail ring. Set to centre with a round old cut diamond in an open back grain setting an approximate weight of 0.95 carats, further set with twenty two round old cut diamon...

Art Deco diamond cluster ring. Centrally set with one round old cut diamond in an open back rubover setting with an approximate weight of 0.8...

Ring Size: 4 Metal Type: Platinum [Hallmarked, and Tested] Weight: 5.9 grams Total Diamond Carat Weight: 1.00ct Center Diamond Details: Weight: .50ct Cut: Old European brilliant Co...

Step into the allure of a bygone era with this early 1900's Art Deco diamond cocktail ring. Set with three bezel set, Old European cut diamonds, totaling 1.00cts., in the center and haloed by 16 Old European cut diamonds. Two additional diamonds adorn the open work design of this exquisite piece which is a tribute to timeless elegance, capturing the intricate artistry of the Art Deco period. Perfect for special occasions or as an unforgettable gift, this ring promises to be a treasured heirloom with its sparkling charm and vintage allure. 3 Old European diamonds F VS approximate .45 carats 20 round Old European cut diamonds F...

A striking vintage cocktail ring that captures the glamour of a bygone era, this piece features a beautifully cut 1.28ct old European cut diamond at its center — an authentic diamond...

This stunning early 20th-century platinum vintage diamond ring features a timeless design with four Old European Cut diamonds totaling approximately 1.00 carat, elegantly set down th...