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Unusual colouration caused by natural iron oxide weathering
It weighs 216 grams
Dimensions at widest points approximately 145 mm x 130 mm x 55 mm thick
120 mm x 70 mm x 45 mm thick
Very unusual piece
BJ129 Polished "Black Jade" . striped Unusual colouration caused by naturalBJ129 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 215 mm x 110 mm x 65 mm thick. It weighs 3,066 grams. From our mining lease on Ninghan Station in the Midwest
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