This free form cabochon is cut from malachite and quartzite.  From the Inspiration Open Pit Mine near the town of  Globe, Arizona in the U.S.A.  It was hand cut in my cutting shop.  The polish is good the edges are cut for setting the stone in a bezel and the bottoms are flat.  NICE CABOCHON!  

SIZE:(in millimeters) 33 x 20 x 3 MM THICK.
WEIGHT(Carats):  27.5
DOME: SLIGHTLY DOMED.
BOTTOM: FLAT.  
EDGE:  GOOD FOR BEZEL 
POLISH:  GOOD.