This is an authentic TIFFANY & CO Sterling Silver Green Quartz Sparklers Cocktail Ring 48, 4.25. This stunning sterling silver ring is a lovely statement piece with a prominent green quartz stone measuring 12x16mm. For a one of a kind look only from Tiffany & Co! Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.