Please see pics for measurements. Extinct now, no one is mining it. Priced at 3.50 per carat. This is some of that material.Cut by dick zachary in gallup nm early 1990's. This material was stabilized by the miner, no color enhancement, just hardened. All hachita cabs are backed for stability during the setting process. We have pounds available of cabs or rough contact for more info. We have been in the turquoise business and native american art business since 1961. This item is made of gemstone.