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OG213 A matching pair of polished Orbicular Granite halves with natural rough backs
PU139 Purple Chalcedony rough rock
Dimensions at widest points approximately 170 mm x 90 mm x 18 mm thick
BJ132 Polished "Black Jade" A trade name for metamorphosed magnesian tholeiite (basalt)
Polished De Grussa copper ore slab CO123 stripey jasper OG213 A matching pair ofCO123 DeGrussa copper ore slab, polished on one side. Dimensions at widest points approximately 140 mm x 70 mm x 11. 5 mm thick. Weighs: 249 grams A mix of copper minerals that formed in the upper oxidised zone. Consisting of dark green malachite, tenorite, cuprite, chrysocolla, native copper and brown iron oxides. The Degrussa underground mine is a high grade copper deposit in Western Australia that commenced operation in 2012 and ceased mining in
