Polished Bauxite BAU136 #google BJ139 Polished "Black Jade" A

BJ139  Polished "Black Jade" A trade name for metamorphosed magnesian tholeiite (basalt)

Approximate weight of each piece is between 12 and 42 grams

Dimensions at widest points approximately 100 mm x 85 mm x 8 mm thick

185 mm x 65 mm x 30 mm thick

CH497  Chrysoprase rough rock

Polished Bauxite BAU136 #google BJ139 Polished "Black Jade" ABAU136. Bauxite (laterite) rough rock, cut and polished on one side. Dimensions at widest points approximately 100 mm x 80 mm x 40 mm thick. Weighs 528 grams. Bauxite is the main raw material used in the commercial production of aluminium. Large reserves of this stone occur in Western Australia. This specimen is from east of the Darling Ranges just outside the city of Perth.