This is an authentic TIFFANY 18K White Gold Aquamarine Diamond X Cocktail Ring 52 6. This ring is crafted of 18 karat white gold and features a cushion cut aquamarine stone framed by a crosshatch pattern of diamonds weighing approximately .20 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.