This is an authentic TIFFANY 18K Yellow Gold Platinum Diamond 4mm Etoile Band Ring 54 6.75. The ring is crafted of 18 karat yellow gold and platinum, and features a polished gold domed band with bezel-set round brilliant cut diamonds in platinum, approximately .27 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.