Item #: 1143098 This is an authentic TIFFANY 18K Yellow Gold Diamond Enchant Heart Key Pendant Necklace. The necklace is crafted of 18 karat yellow gold and features a filigree heart key pendant set with a single round brilliant cut diamond, approximately .02 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.