This is an authentic TIFFANY & CO Sterling Silver 9mm Titanium Coin Edge Ring 5.75 This is a stunning ring crafted of an inner core of sterling silver and an outer band of textured titanium for a stunning look. This is a marvelous ring for a one of a kind look, from Tiffany & Co! Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.