Item #: 645821 This is an authentic TIFFANY 18K Yellow Gold Platinum Diamond Schlumberger Sixteen Stone Ring 52 6. The ring is crafted of platinum and features 18 karat yellow gold X motifs alternating between sixteen round brilliant cut diamonds, approximately 1.14 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.