Item #: 848053 This is an authentic TIFFANY Platinum 18K White Gold Diamond Crown Key Pendant Necklace. This necklace is crafted of platinum and 18 karat white gold, and features a key motif pendant accented with diamonds, approximately .11 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.