Bvlgari Ladies Rings. B.Zero1 series. SKU: AN859655. Color: Yellow Gold. Metal Type: Yellow Gold. Metal Stamp: 18k. Gem stone type: Diamond. Stone weight: 0.28ct. Bvlgari B.Zero1 Yellow Gold Ring. The B.zero1 three-band ring in 18kt yellow gold, featuring demi-pave diamonds for a luxurious touch. Made In Italy.