BJ114 Polished "Black Jade" slab. polished prehnite Dimensions at widest points approximately

Dimensions at widest points approximately 150 mm x 100 mm x 9 mm thick

PC122 Chalcedony slab

Dimensions at widest points approximately 60 mm x 45 mm x 25 mm thick

Weight  is 205 grams

BJ114 Polished "Black Jade" slab. polished prehnite Dimensions at widest points approximatelyBJ114 Polished "Black Jade" A trade name for metamorphosed magnesian tholeiite (basalt). A slab, cut and polished on one side . Difficult to photograph due to the mirror black polish.. Dimensions at widest points approximately 100 mm x 90 mm x 6 mm thick. It weighs 134 grams. From our mining lease on Ninghan Station in the Midwest region of Western Australia.