BJ129 Polished "Black Jade" . Orbicular Granite CH463 Chrysoprase slab

CH463  Chrysoprase slab

Dimensions at widest points approximately 120 mm x 120 mm x 65 mm thick

Slightly damaged point

Dimensions at widest points approximately 100 mm x 55 mm x 60 mm thick

This specimen is from east of the Darling Ranges just outside the city of Perth

BJ129 Polished "Black Jade" . Orbicular Granite CH463 Chrysoprase slabBJ129 Polished "Black Jade" A trade name for metamorphosed magnesian tholeiite (basalt). A rough rock, cut and polished on one side with a cut base to stand as a display specimen ! Geologically interesting with a cross cutting quartz vein ! Difficult to photograph due to the mirror black polish.. Dimensions at widest points approximately 215 mm x 110 mm x 65 mm thick. It weighs 3,066 grams. From our mining lease on Ninghan Station in the Midwest