Item #: 1625303 Year: 1990 This is an authentic TIFFANY 18K Yellow Gold Diamond Signature X Ring 44 3. The ring is crafted of 18 karat yellow gold and features an X motif accented with diamonds, approximately .18 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.