This is an authenticDAVID YURMAN 18K Yellow Gold Golden Sheen Sapphire 17MM Signet Ring 62 10. The ring is crafted of 18 karat yellow gold and features a brown sapphire center stone set atop a burnished finish band. Follow this item for alerts. David Yurman is a registered trademark of David Yurman. FASHIONPHILE is not affiliated with David Yurman.