Item #: 1423002 This is an authentic TIFFANY 18K White Gold Diamond Large Filigree Heart Key Pendant Necklace. The necklace is crafted of an 18 karat white gold chain that holds a filigree heart lock pendant and a key charm pave-set with round brilliant cut diamonds, approximately 1.44 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.