This is an authentic BULGARI Stainless Steel 18K Yellow Gold Onyx Tubogas Ring size 53 or 6.25. This ring is crafted of 18 karat yellow gold and stainless steel, and features a flexible band with a black onyx center inlay framed by the BVLGARI logo. Follow this item for alerts. Bulgari is a registered trademark of Bulgari. FASHIONPHILE is not affiliated with Bulgari.