BJ121 Polished "Black Jade" slab. microbialite Dimensions at widest points approximately

Dimensions at widest points approximately 95 mm x 85 mm x 55 mm thick

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Highly polished on both sides

BJ121 Polished "Black Jade" slab. microbialite Dimensions at widest points approximatelyBJ121 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.