BJ128 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 80 mm x 60 mm x 25 mm thick.
It weighs 268 grams.
From our mining lease on Ninghan Station in the Midwest region of Western Australia.
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