This is an authentic DAVID YURMAN 18K Yellow Gold Diamond Turquoise Chatelaine Bypass Ring 54 7. The ring is crafted of 18 karat yellow gold and features two turquoise stones in a bypass setting and held in place with diamond accented prongs, approximately .06 total carat weight. Follow this item for alerts. David Yurman is a registered trademark of David Yurman. FASHIONPHILE is not affiliated with David Yurman.