This is an authentic BULGARI 18K White Gold Diamond B.Zero1 Engagement Ring size 51 or 5.75. The ring is crafted of 18 karat white gold and features a single round brilliant cut diamond weighing approximately .30 total carat weight with D color and VS1 clarity. Follow this item for alerts. Bulgari is a registered trademark of Bulgari. FASHIONPHILE is not affiliated with Bulgari.