BJ140 Polished "Black Jade" . purple Dimensions approximately 170 mm x

Dimensions approximately 170 mm x 60 mm x 11 mm thick

160 mm x 110 mm x 90 mm

cut and polished on one side with a cut back

115 mm x 85 mm x 9 mm thick

Dimensions at widest points approximately 160 mm x 65 mm x 11 mm  thick

BJ140 Polished "Black Jade" . purple Dimensions approximately 170 mm xBJ140 Polished "Black Jade" A trade name for metamorphosed magnesian tholeiite (basalt). A rough rock, cut and polished on one side with a natural back and flat base to stand on. Difficult to photograph due to the mirror black polish.. Dimensions at widest points approximately 145 mm x 70 mm x 40 mm thick. It weighs 649 grams. From our mining lease on Ninghan Station in the Midwest region of Western Australia.