This is an authentic TIFFANY Platinum Diamond .30ct Solitaire Engagement Ring size 49 or 4.75. The ring is crafted of platinum and features a six-prong-set round brilliant cut diamond, approximately .30 total carat weight, with G color and VS2 clarity grade. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.