BJ139 Polished "Black Jade" . Kumarina Dimensions at widest points approximately

Dimensions at widest points approximately 65 mm x 60 mm x 25 mm thick

Dimensions approximately 120 mm x 65 mm x 8 mm thick

MK453   Mookaite cut and polished on one side with a rough natural back

Dimensions approximately 240 mm x 120 mm x 8 mm thick

145 mm x 100 mm x 40 mm thick

BJ139 Polished "Black Jade" . Kumarina Dimensions at widest points approximatelyBJ139 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.