These are authentic DAVID YURMAN Sterling Silver Diamond Blue Topaz 9mm Chatelaine Earrings. The earrings are crafted of sterling silver and feature 14 karat yellow gold posts, faceted blue topaz stones, and pave set diamond prongs weighing approximately .09 total carat weight. PLEASE NOTE: The earrings include mismatched earring backs. Follow this item for alerts. David Yurman is a registered trademark of David Yurman. FASHIONPHILE is not affiliated with David Yurman.