These are natural, genuine Australian semi black opal gemstones. They are unset stones - opaque, with a gorgeous deep green hue. They are cabbed in a marquis shape and measure 6mm long by 3mm wide (small stones). They are highly polished and free of cracks, crazing or other imperfections. There are six stones included. Suitable for setting in fine jewelry.

• Natural mined Australian semi black opal
• Gorgeous natural deep green hue
• Rare marquis cab - 6mm x 3mm

Natural mined Australian semi black opalAPCMC