Item #: 909750 This is an authentic TIFFANY 18K Yellow White Gold Diamond Signature X Ring size 50 or 5.5. The ring is crafted of 18 karat yellow gold and features white gold X motifs accented with diamonds, approximately .05 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.