A Pebble Monochrome Pearl Necklace with a set of black and white pearls. Strung and knotted on navy thread, with an 18K yellow gold clasp. Total necklace length is 15 inches or 38cm. A Pearl Knot Necklace with a set of black & white freshwater pearls, 9-10mm in diameter.t. Material: Gold Karat: 18K Stone: Pearl Chain length: 38