This is an authentic TIFFANY Platinum Diamond Blue Sapphire 4mm Lucida Band Ring size 56 or 7.5. The ring is crafted of platinum and features a channel setting with alternating blue sapphires and round cut diamonds, weighing approximately .25 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.