BJ126 Polished "Black Jade" slab. magnesite Dimensions at widest points approximately

Dimensions at widest points approximately 110 mm x 80 mm x 55 mm thick

Weighs 654 grams

Dimensions at widest points approximately 110 mm x 55 mm x 30 mm thick

Conglomerate is a sedimentary rock consisting of individual pebbles (clasts) within a finer-grained matrix that have become cemented together

Tumble polished Agates

BJ126 Polished "Black Jade" slab. magnesite Dimensions at widest points approximatelyBJ126 Polished "Black Jade" A trade name for metamorphosed magnesian tholeiite (basalt). A thick slab, cut and polished on one side . Difficult to photograph due to the mirror black polish.. Dimensions at widest points approximately 170 mm x 45 mm x 28 mm thick. It weighs 374 grams. From our mining lease on Ninghan Station in the Midwest region of Western Australia.