Vintage Cartier Set Coral Onyx Diamond 18k Gold Ring and Earrings Estate JewelryA vintage Cartier set consisting of a ring and matching earrings. The set is made of 18k gold, coral, black onyx, and diamond. Each piece features carved coral sections with a ribbed texture, contrasted by smooth black onyx inlays that are framed by rows of round brilliant cut diamonds. This composition highlights Cartiers refined balance of color, texture, and geometry. The rings domed form repeats the sculptural design of the earrings. The earrings