A Gorgeous Classic Antique Diamond Wedding Ring, 18K White Gold Ornate Floral Filigree Setting, Edwardian - Art Deco, circa 1920. This wonderful antique diamond ring dates back to the Art Deco Era, circa 1920. The center holds an antique single cut diamond. The setting is extremely beautiful fine antique filigree with floral details 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 4 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.