This matched pair is cut from onyx from seaven mile wash near 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.    VERY NICE PAIR!!

SIZE:(in millimeters) 26 x 15 x 3 MM THICK EACH STONE.
WEIGHT(Carats): 24 TOTAL WEIGHT OF BOTH STONES.
DOME: SLIGHTLY DOMED.
BOTTOM: FLAT.  
EDGE:  GOOD FOR BEZEL 
POLISH:  GOOD.