Item #: 592070 This is an authentic DAVID YURMAN Sterling Silver Diamond Blue Topaz 20mm Cable Wrap Ring 52 6. The ring is crafted of sterling silver and features smooth and cable style bands holding a striking 20mm blue topaz stone accented with diamonds, approximately .50 total carat weight. Follow this item for alerts. David Yurman is a registered trademark of David Yurman. FASHIONPHILE is not affiliated with David Yurman.