Item #: 475161 This is an authentic TIFFANY 18K White Gold Diamond Medium Heart Key Pendant Necklace. The necklace is crafted of 18 karat white gold and features a key shaped pendant with a heart motif lined with diamonds weighing approximately .08 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.