Solid Lightning Ridge semi black opal. 4.16ct, 18x11mm approx. Natural sandstone pitting is visible on the surface.
A semi black opal has a smoky base colour, and is lighter in hue than black opal.
Solid Lightning Ridge semi black opal. 4.16ct, 18x11mm approx. Natural sandstone pitting is visible on the surface.
A semi black opal has a smoky base colour, and is lighter in hue than black opal.
