Item #: 991156 This is an authentic TIFFANY Platinum Diamond Blue Sapphire Cobblestone Band Ring 47 or 4. The ring is crafted of platinum and features blue sapphires and round brilliant cut diamonds weighing approximately 1.85 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.