Certified No Treatment Australian Semi Black Opal ,10.15 Cttw. ,Gray Base Opal ,Lighting Ridge Opal ,Semi Black Opal ,Rainbow Sparkle Opal

Total Carat Weight : 10.15 Cts.

Shape : Oval Cabochon

Size ( in mm ) : 21.75 x 12.34 x 6.13

Origin : Lightning Ridge , Australia

Base : Gray - Dark ( Semi Black )

Color Play : Red , Green , Blue , Yellow , Purple

Look at the photos & video to see how the color plays across the face of the opal.

Specific Comments : Very Slight ( Minor ) Chip on the back side which is repaired during the manufacturing process . Not visible on the front side of the opal . Can be re-cut again to remove on request . Does not make any difference , can be used as it is .