Vintage Bulgari 18k Gold Stainless Steel Tubogas Hoop Earrings, circa 1980s. These earrings weigh 20 grams in total, their length is 1 inch and 3/8 in width, referring to how thick they are. They have posts with lever backs. Stamped Bulgari, 750, serial number, and maker's mark. The steel tubogas is accented with 18k gold at the top and bottom of the hoop, the post and closure, and adorned with gold pyramid, adding another touch of intrigue.