This is an authentic BULGARI 18K Rose Gold Black Ceramic B.Zero1 Four-Band Ring 49 4.75. This ring is crafted of 18 karat rose gold and features black ceramic at the center in the signature B.zero barrel motif. This is an excellent ring with the classic elegance only from Bulgari! Follow this item for alerts. Bulgari is a registered trademark of Bulgari. FASHIONPHILE is not affiliated with Bulgari.