This is an authentic TIFFANY Platinum 18K Yellow Gold Fancy Intense Yellow Diamond .77ct Enchant Cushion Engagement Ring 65 11. The ring is crafted of platinum and 18 karat yellow gold, and features a bezel-set cushion brilliant cut Fancy Intense yellow diamond weighing approximately .77 carat, with a SI1 clarity grade. The ring also features a double halo of round brilliant cut diamonds weighing approximately .43 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.