Beautiful and rare Bisbee turquoise in sterling silver stamped round ring. Thick gauge silver ring face.  Created by Richard Begay. Due to mining restrictions and the difficulty of recovering it from the dumps, Bisbee turquoise is rare and highly valued by collectors and jewelry makers. Most of the turquoise was mined during the open-pit operations, and what's left is often obtained through old collections or "mine robbers" who access the site illegally,