This vintage black onyx diamond filigree ring is beautiful.  This rectangular shaped onyx is held by four strong engraved prongs.  This estate black onyx filigree ring has an old diamond pierced into the center of the onyx.  This black onyx is embellished with a silver painted design.  This art deco ring is set in an intricate 18K white gold openwork filigree design.  This ring beautifully demonstrates the geometric, rectangular design used in rings from the 1920s -1930s.

Hallmark: 18k
Diamond: One old hand-cut diamond measuring appx 0.07 carats
Size: 4.5
Weight: 2.9 Grams
Circa: 1920s-1930s