16.8 Carats of very rare and high grade Cheyenne Turquoise. All of our stone is 100% natural and gauranteed. If for any reason you are not satisfied, just return your purchase to us for a full refund minus shipping cost. No risk shopping with Silver State Turquoise. Mined and cut by the mine owners. Own a piece of beautiful American turquoise straight out of the Cheyenne Mine in Central Nevada!!