This is an authentic TIFFANY 18K Yellow Gold Diamond .17ct Elsa Peretti Diamonds by the Yard Pendant Necklace. This lovely necklace features a delicate 18 karat yellow gold chain with a bezel set round brilliant diamond weighing approximately .17 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.