BJ131 Polished "Black Jade" . polished prehnite natural back

natural back

Dimensions at widest points approximately 140 mm x 80 mm x 80 mm thick

70 mm x 40 mm  x 8

Quartz crystal cavity

Dimensions at widest points approximately 150 mm x 60 mm x 17 mm thick

BJ131 Polished "Black Jade" . polished prehnite natural backBJ131 Polished "Black Jade" A trade name for metamorphosed magnesian tholeiite (basalt). A thick slab, cut and polished on one side with a cut base to stand as a display specimen ! Difficult to photograph due to the mirror black polish.. Dimensions at widest points approximately 180 mm x 90 mm x 33 mm thick. It weighs 1,113 grams. From our mining lease on Ninghan Station in the Midwest region of Western Australia.