Item #: 1804083 This is an authentic TIFFANY Platinum 18K Yellow Gold Diamond Narrow Schlumberger Sixteen Stone Ring 52 6. The ring is crafted of 18 karat yellow gold and platinum and features 24 round brilliant cut diamonds weighing approximately .60 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.