Polished De Grussa copper ore slab CO118 Green Opal All reasonably uniform in size

All reasonably uniform in size (roughly 15 - 20 mm diameter}

Dimensions at widest points approximately 250 mm x 140 mm x 13 mm

RFJ150  Rhyolite (Rainforest Jasper) rough rock

It weighs 188 grams

KA137  Kumarina Agate

Polished De Grussa copper ore slab CO118 Green Opal All reasonably uniform in sizeCO118 DeGrussa copper ore slab, polished on one side. Dimensions at widest points approximately 300 mm x 240 mm x 18 mm thick. Weighs: 2,718 grams A mix of copper minerals that formed in the upper oxidised zone. Fractured quartz vein infilled with iron oxides and chrysocolla. The Degrussa underground mine is a high grade copper deposit in Western Australia that commenced operation in 2012 and ceased mining in 2022.