This is an authentic DAVID YURMAN Sterling Silver Diamond Prasiolite Chatelaine Y Necklace. Station Necklace. The necklace is crafted of sterling silver and features an adjustable Y box chain with three prasiolite stations in diamond accented four prong settings, approximately .20 total carat weight. Follow this item for alerts. David Yurman is a registered trademark of David Yurman. FASHIONPHILE is not affiliated with David Yurman.