This rare semi precious gemstone material is known as "Arizona Pietersite" because of its superb chatoyant cat's eye effect. It has also been called Arizona Tigereye. Cabochons cut from this material seem to glow with their own internal light. This cabochon material is not the same as the original Pietersite found in Africa, or the different material also known as Pietersite found in China. This gemstone material is actually Serpentine with Chrysotile fibers and comes in several varieties-from gold to root beer to silver flash, and from green to brown Serpentine. Serpentine is produced when water from magmas changed igneous rocks. Arizona Pietersite is found in a very remote and rugged area in the Arizona desert and is difficult to cut into cabochons. We custom cut only the best rough rock material with lots of flash into designer cabochons.