10k White Gold Blue Topaz Pendant and Earrings Set Pendant measures 14.5x7.5mm and hangs from an 18" chain. Earrings measure 12x5mm. Gemstones may have been treated to improve their appearance or durability and may require special care. 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.