BJ123 Polished "Black Jade" . alcheringa narrina Dimensions at widest points approximately

Dimensions at widest points approximately 130 mm x 95 mm x 60 mm thick

PU129  Purple Chalcedony slab

OJ166  A rough rock

Measures approximately 220mm x 120mm and  7mm thick

Weight 636 grams

BJ123 Polished "Black Jade" . alcheringa narrina Dimensions at widest points approximatelyBJ123 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 170 mm x 110 mm x 65 mm thick. It weighs 1,619 grams. From our mining lease on Ninghan Station in the Midwest