This matched pair is cut from indian paint stone from death valley in California..  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) 18 x 17 x 2.5  MM THICK EACH STONE.
WEIGHT(Carats): 21.5 TOTAL WEIGHT OF BOTH STONES. 
DOME: SLIGHTLY DOMED.
BOTTOM: FLAT.  
EDGE:  GOOD FOR BEZEL 
POLISH:  GOOD.