Polished Bauxite BAU136 #google Approximate weight of each piece

Approximate weight of each piece is between 12 and 42 grams

120 mm x 50 mm  x 6 mm

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

CH497  Chrysoprase rough rock

Weight for the lot is 231 grams

Polished Bauxite BAU136 #google Approximate weight of each pieceBAU136. 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.