This is an authentic TIFFANY & CO 18K Yellow Gold Mini Heart Key Pendant. This charming 28mm pendant is 18 karat gold in the form of a skeleton key with a heart grip. This is a charming piece with the unforgettable style of Tiffany & Co! Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.