Item #: 808914 TIFFANY 18K White Gold Diamond Turquoise T Wire Ring 54 7. The ring is crafted of 18 karat white gold and features two horizontal T motifs, one set with turquoise and the other set with sparkling round brilliant cut diamonds, approximately .07 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.