This is an authentic TIFFANY Platinum 18K Yellow Gold Diamond Schlumberger Lynn Pendant Necklace. The necklace is crafted of platinum and 18 karat yellow gold and features a pendant with the signature "x" motif and four round brilliant cut diamonds, approximately .21 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.