BJ129 Polished "Black Jade" . Orbicular Granite Dimensions at widest points approximately

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

It weighs 191 grams

CH463  Chrysoprase slab

Weighs:  287 grams

All reasonably uniform in size (roughly 15 - 20 mm diameter}

BJ129 Polished "Black Jade" . Orbicular Granite Dimensions at widest points approximatelyBJ129 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