This is an authentic TIFFANY & CO 18K White Gold Diamond Mini Heart Key Charm Pendant Necklace. This stylish necklace is collar length and 18 karat white gold and features a 37mm-long, white gold heart-shaped key pendant with the heart-shaped grip lined in pave diamonds. This is a wonderful necklace with the unforgettable look from Tiffany & Co! Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.