Onyx Engagement Rings

One Art Deco GIA 1.62 Carat Old European Cut Diamond Onyx Platinum Ring. Featuring one GIA old European cut diamond of 1.62 carats, accompanied with certificate #5222715661 stating the diamond is H color, I1 clarity. Accented by 18 baguette cut diamonds with a total weight of approximately 3.60 carats, graded near-colorless, VS clarity, and two cabochon cut pieces of onyx. Crafted in platinum with an Art Deco top, and later added shank. Circa 1920. The ring is a size 7 and may be resized. About this Item: Be the star of the show the moment you walk in the room while wearing this Art Deco Diamond Onyx Ring...

One Art Deco French 3.25 Carat Cushion Cut Diamond Onyx 18 Karat White Gold Ring. Featuring one cushion cut diamond weighing approximately 3.25 carats, graded S-T color, SI1 clarity....

Circa 1925 This elaborate, one-of-a-kind Art Deco era platinum engagement ring features an excellent 1.61 ct old European cut diamond (I-J color, VVS2 clarity). The diamond is set i...

Circa 1920s This elaborate pyramid shaped platinum ring of a bold Art Deco design is centered with a vivid bluish green emerald (likely Colombian...

One 18 karat white gold Art Deco carved flower black onyx ring featuring three (3) single cut diamonds, approximately 0.10-carat total weight with matching H/I color and SI1 clarity...

Beautiful Platinum handmade genuine Art Deco ring. It features a large sparkling Old mine cut diamond in the center, weight 0,50 ct. I I1, framed in Onyx, and surrounded by smaller O...

The online jewelry community offers plenty of Art Deco rings, but this Art Deco Diamond Coral Onyx Platinum Ring is the one you have probably never...

A stunning, fine and impressive antique Art Deco 2.56 carat (total) diamond and black onyx, cocktail ring crafted in platinum; part of our diverse antique jewelry and collections. This fine and impressive antique diamond and onyx ring...

Gorgeous art deco engagement ring with diamonds and an onyx center stone. Item #R0499 Metal: Platinum Weight: 3.9 Grams Total Diamond Weight: Approximately 0.75 CTS Diamond Col...

This ring, which we believe to be American because it is made in 14 carat white gold, features a 0.55 carat diamond in the centre. It is claw set and estimated as F in colour and VS1...

A gorgeous onyx and diamond ring from the Art Deco era (ca1920)! Crafted in platinum, the design is both bold and stylish. At the center is a square plaque that has been hand carved from solid black onyx. The stone has clipped corners is smoothly polished for a rich, glossy finish. A single diamond is bezel set in the middle, weighing approximately .30ct with estimated I color and VS2 clarity. The diamond is a faceted old Mine Cut stone, delivering a lively sparkle! Completing the design are tapered shoulders, which are lined with rows of diamonds and onyx stones. The pattern forms a stylish black and white "striped" motif, which extends to a smooth platinum band in the back. Swirled filigree wirework accents are visible from the side of the setting, a perfect finishing touch. The ring has a stylish architectural look that was common during the Art Deco era, but translates perfectly into modern day fashion. It would make an incredible addition to any vintage ring collection...

An impressive 0.59 carat diamond and black onyx, 18 karat yellow gold and 18 karat white gold set cocktail ring; part of our diverse antique jewelry and estate jewelry collections T...