Year: 2019 This is an authentic BULGARI 18K Rose White Gold Labyrinth B.Zero1 Four-Band Ring 50 5.25. The ring is crafted of 18 karat rose and white gold in the classic B.zero barrel motif with the BVLGARI name engraved on both sides. Follow this item for alerts. Bulgari is a registered trademark of Bulgari. FASHIONPHILE is not affiliated with Bulgari.