Item #: 436845 This is an authentic TIFFANY Platinum Diamond .40ct Solitaire Engagement Ring 46 3.75. The ring is crafted of polished platinum and features a knife edge band and a classic six prong platinum setting that holds a single round brilliant cut diamond, approximately .40 carat weight with I color and SI1 clarity. This is an exquisite ring with the timeless elegance of Tiffany! Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.