This product is a wholesale lot of 11-12 pieces of high-quality, natural malachite gemstones from Congo. The gemstones are oval, pear, round, marquise, octagon, trillion, and fancy-shaped, with sizes ranging from 16x22 to 23x33 mm. They have aventurescence, iridescence, and cat's eye effects, and are cabochon-shaped with excellent cut grade and eye-clean clarity. The gemstones are polished on both sides and have a green color. The product is certified by GTL and is sold by the brand Treasuregems14.