This is an authentic TIFFANY Platinum Diamond .28ct Etoile Solitaire Engagement Ring size 53 or 6.25. The ring is crafted of platinum and features a round brilliant cut diamond, approximately .28 carat, with I color and VS1 clarity grade. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.