BJ138 Polished "Black Jade" slab polished rock NJ477 A rough rock

NJ477  A rough rock

Dimensions approximately 105 mm x 90 mm x 7

Dimensions at widest points approximately 220 mm x 80  mm x 11 mm thick

215 mm x 130 mm x 12

Dimensions at widest points are approximately 140 mm x 45 mm x 40 mm

BJ138 Polished "Black Jade" slab polished rock NJ477 A rough rockBJ138 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 170 mm x 45 mm x 15. 5 mm thick. It weighs 206 grams. From our mining lease on Ninghan Station in the Midwest region of Western Australia.