This is an authentic TIFFANY Platinum .24ct Diamond Solitaire Engagement Ring size 51 or 5.75. The ring is crafted of platinum and features a solitaire round brilliant cut diamond weighing approximately .24 total carat weight, with H color and VS1 clarity. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.