These blue opal/ owyhee opal cabochons range in sizes from the smallest at 14 mm x 22mm and the largest being 28mm x 42mm
they average at about 6mm thick.
These blue opal/ owyhee opal cabochons range in sizes from the smallest at 14 mm x 22mm and the largest being 28mm x 42mm
they average at about 6mm thick.