BJ142 Polished "Black Jade" slab. Opalite Dimensions at widest points are

Dimensions at widest points are approximately 80 mm x 40 mm x 30 mm

OG198   Polished orbicular granite with natural rough back

Dimensions at widest points approximately 125 mm x 105 mm and 40 mm thick

TI267   Tiger Iron slab

It probably grew in shallow water conditions with intermittent subaerial exposure

BJ142 Polished "Black Jade" slab. Opalite Dimensions at widest points areBJ142 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 145 mm x 40 mm x 7 9 mm thick. It weighs 134 grams. From our mining lease on Ninghan Station in the Midwest region of Western Australia.