A pair of Tiffany & Co. clip-on earrings, circa 1980s, featuring a design with diamonds and onyx set in 18k yellow gold. These earrings are characterized by their half-hoop shape with black onyx segments and diamond pavé sections, bordered by gold trim. The earrings are designed with clip-on backs. Tiffany & Co. is renowned for its luxury jewelry and high-quality materials.