This is an authentic Bulgari 18K Rose Gold Black Ceramic B.Zero1 Four-Band Ring size 50 or 5.25. The ring is crafted of 18 karat rose gold and features a black ceramic spiral motif framed by the BVLGARI logo on either side. Follow this item for alerts. Bulgari is a registered trademark of Bulgari. FASHIONPHILE is not affiliated with Bulgari.