Item #: 601785 This is an authentic DAVID YURMAN 18K Yellow Gold Aquamarine 20mm Oval Signature Ring size 51 or 5.75. This magnificent ring is crafted of an 18 karat yellow gold and features a wide statement style band that holds a light green aquamarine cabochon. Follow this item for alerts. David Yurman is a registered trademark of David Yurman. FASHIONPHILE is not affiliated with David Yurman.