This is an authentic TIFFANY Sterling Silver Diamond Knot Key Pendant Necklace. The necklace is crafted of sterling silver and features a knot motif key pendant set with a single sparkling diamond weighing approximately .02 carats. This is a stunning necklace with the elegant style of Tiffany! Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.