This free form cabochon is cut from malachite, chrysocolla and cuprite from Mineral Mountain near the town of Florence, 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  BETTER THAN THE PHOTO SHOWS!!

SIZE:(in millimeters) 36 x 17 x 3 MM THICK.
WEIGHT(Carats): 27.5 
DOME: SLIGHTLY DOMED.
BOTTOM: FLAT.  
EDGE:  GOOD FOR BEZEL 
POLISH:  GOOD.