This is an authentic TIFFANY 18K Yellow Gold Diamond .42ct Elsa Peretti Diamonds by the Yard 3 Station Necklace. The necklace is crafted of 18 karat yellow gold and features three bezel set diamonds, approximately .42 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.