Item #: 603457 This is an authentic TIFFANY Platinum Diamond .18ct Solitaire Engagement Ring size 49 or 4.75. The ring is crafted of platinum and features a knife edge band set with a single round brilliant cut diamond weighing approximately .18 carats. Inscription #T&Co.U07160188 Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.