This is an authentic TIFFANY Platinum Diamond .55ct Solitaire Engagement Ring 47 4. The ring is crafted of platinum and features a six prong-set round brilliant cut diamond weighing approximately .55 total carat weight, with F color and VS1 clarity grade. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.