This is an authentic TIFFANY Platinum Diamond .30ct Solitaire Engagement Ring 49 5. The ring is crafted of platinum and features a six prong-set round brilliant cut diamond, approximately .30 total carat weight, with H color and VS2 clarity grade. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.