This is an authentic TIFFANY Platinum Diamond .18ct Solitaire Pendant Necklace. This necklace is crafted of platinum with diamond weighing approximate .18 carat total weight. This is a simple, yet very elegant necklace with the unforgettable style from Tiffany! Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.