Item #: 866562 This is an authentic TIFFANY 18K Yellow Gold Peridot Ring size 50 or 5.5. The ring is crafted of 18 karat yellow gold and features a cabochon peridot stone centered atop a rounded band. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.