BJ123 Polished "Black Jade" . alcheringa narrina PU129 Purple Chalcedony slab

PU129  Purple Chalcedony slab

Weight 636 grams

OJ166  A rough rock

Measures approximately 220mm x 120mm and  7mm thick

CH458  Chrysoprase rough rock

BJ123 Polished "Black Jade" . alcheringa narrina PU129 Purple Chalcedony slabBJ123 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