This is an authentic TIFFANY 18K Yellow Gold Diamond Crown Key Pendant Necklace. This stylish piece consists of a 18 karat yellow gold key pendant detailed with pave diamonds. Indulge in this lovely necklace with the timeless style of Tiffany & Co! Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.