This is an authentic TIFFANY 18K White Gold Diamond Medium Heart Key Pendant Necklace. This stylish necklace is 18 karat white gold and features a heart shaped skeleton key lined with diamonds. This is an excellent necklace with the unforgettable look of Tiffany & Co! Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.