A Gorgeous Classic Antique Diamond Wedding Ring, 18K White Gold Filigree, Edwardian - Art Deco, circa 1920. This wonderful antique diamond ring dates back to the Art Deco Era, circa 1920. The center holds a fine white diamond measuring about 2.5mm in diameter. The setting is fine antique filigree composed of 18K white gold. Overall the ring measures about 5/16 inch long by about 3/4 inch wide from side to side. Ring Size: about 5 1/2 (could be resized by your jeweler or ask me about using mine before shipping). This ring was acquired through an estate collection and is in lovely vintage condition.