Item #: 589361 This is an authentic TIFFANY Platinum Diamond .18ct Solitaire Pendant Necklace. The necklace is crafted of platinum and features a prong set round brilliant cut diamond, approximately .18 carats. This is a classic necklace with the timeless elegance of Tiffany! Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.