These are authentic DAVID YURMAN Sterling Silver Diamond Blue Topaz Sapphire Iolite Mosaic Earrings. These earrings are crafted of sterling silver and 18 karat yellow gold posts, and features a mosaic of blue topaz, blue sapphire, iolite and diamonds, approximately .12 total carat weight. Follow this item for alerts. David Yurman is a registered trademark of David Yurman. FASHIONPHILE is not affiliated with David Yurman.