Not quite perfect oval shaped rare semi precious gemstone material is known as "Arizona Pietersite" because of its superb chatoyant cat's eye effect.
This silver shimmery cabochon is 33 mm by 27 mm and 8 mm thick.
It has also been called Arizona Tiger-eye.
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 and comes in several varieties-from gold to root beer to silver flash, and from green to brown Serpentine.