14k Yellow Gold Pear-Shape Black Onyx Earrings An elegant 14k yellow gold euro-wire supports the rich, faceted black onyx stones of these earrings, whose versatile design makes them perfect for many occasions. The natural properties and composition of mined gemstones define the unique beauty of each piece. The image may show slight differences to the actual stone in color and texture. Gemstones may have been treated to improve their appearance or durability and may require special care. Domestic