BJ118 Polished "Black Jade" . Tumbled stones Dimensions at widest points approximately

Dimensions at widest points approximately 110 mm x 45 mm x 7 mm thick

Dimensions at widest points approximately 250 mm x 130 mm and 9

Weighs 322 grams

70 million years (Cretaceous)

DOT105  Tumble polished Dendritic Opal

BJ118 Polished "Black Jade" . Tumbled stones Dimensions at widest points approximatelyBJ118 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 150 mm x 120 mm x 60 mm thick. It weighs 1,920 grams. From our mining lease on Ninghan Station in the Midwest