BJ121 Polished "Black Jade" slab. black conglomerate Asperia ashburtonia from the Proterozoic

Asperia ashburtonia from the Proterozoic "Duck Creek Dolomite"

PC120  Chalcedony/chrysoprase rough rock

Dimensions approximately 150 mm x 100 mm x 11

Dimensions at widest points approximately 130 mm x 75 mm x 80 mm thick

BJ121 Polished "Black Jade" slab. black conglomerate Asperia ashburtonia from the ProterozoicBJ121 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 130 mm x 55 mm x 7 mm thick. It weighs 127 grams. From our mining lease on Ninghan Station in the Midwest region of Western Australia.