The octagonal central mounting of this antique engagement ring is set with a breathtaking round cut diamond. Attached to the mounting by delicate filigree, the central stone appears to float in the center of the Art Deco ring. Elegant abstract floral cutwork and engraving adorn the sides and shoulders of the ring. The ring measures 8.56 mm in width. Circa: 1920. Size 5. We can re-size.