Year: 2017 This is an authentic BULGARI 18K Rose Gold Black Ceramic B.Zero1 Four-Band Ring 52 6. The ring is crafted of 18-karat rose gold and features a black ceramic barrel motif with the BVLGARI logo engraved on either side. Follow this item for alerts. Bulgari is a registered trademark of Bulgari. FASHIONPHILE is not affiliated with Bulgari.