Set in 18K yellow gold, this hand-crafted vintage Bulgari Tubogas ring from Portero features Bulgari's renowned flexible construction and a black onyx center surrounded by the brand's logo. Slip on 18K yellow gold Black Onyx Made in Italy Please note: This item is Final Sale. For more information or to schedule a private viewing, please email our Fine Jewelry Specialist or call 646-741-1856.