Item #: 953012 This is an authentic DAVID YURMAN 18K Yellow Gold Quartz Black Onyx Pyrite Signature Bead Toggle Necklace. The necklace is crafted of 18 karat yellow gold and features a variety of quartz, black onyx, and pyrite stones with a toggle clasp for easy wear. Follow this item for alerts. David Yurman is a registered trademark of David Yurman. FASHIONPHILE is not affiliated with David Yurman.