BJ131 Polished "Black Jade" . polished prehnite Dimensions approximately 90 mm x

Dimensions approximately 90 mm x 80 mm x 75 mm thick

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

A bulk assortment

Weighs 997 grams

BJ131 Polished "Black Jade" . polished prehnite Dimensions approximately 90 mm xBJ131 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.