Bvlgari Vintage Bulgari Tubogas Necklace 18k Gold SteelThis vintage Bulgari Tubogas necklace is a great example of the brands flair for distinct, engineered design. Made from 18k yellow gold and stainless steel, it has a structured look. The flexible tubular form is built from tightly wound, interlocking links that create the distinctive ridged surface which is a hallmark of the Tubogas technique. Its smooth curves and fluid movement come from the underlying tension of the metal coils, allowing it to feel