BJ139 Polished "Black Jade" .

BJ139  Polished "Black Jade" A trade name for metamorphosed magnesian tholeiite (basalt). A rough rock, cut and polished on one side.

Difficult to photograph due to the mirror black polish..

Dimensions at widest points approximately 75 mm x 70 mm x 40 mm thick.

It weighs 476 grams.

From our mining lease on Ninghan Station in the Midwest region of Western Australia.