This is an authentic TIFFANY 18K Yellow Gold Yellow Diamond .18ct Solitaire Pendant Necklace. The necklace is crafted of 18 karat yellow gold and features a single prong set cushion cut yellow diamond, approximately .18 carat weight. This is a perfect necklace for everyday wear, exclusively from Tiffany! Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.