Item #: 618578 This is an authentic TIFFANY 18K Yellow Gold Knot Key Pendant Necklace. The necklace is crafted of an 18 karat yellow gold chain holding an intertwined key motif pendant. This is a classic and stylish necklace with the iconic style of Tiffany! Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.