Prase rough PRR115 rock blocks Dimensions approximately 140 mm x

Dimensions approximately 140 mm x 80 mm x 75 mm thick

Dimensions approximately 220mm x 115mm x 4-10mm thick

Bauxite is the main raw material used in the commercial production of aluminium

Dimensions approximately 50mm x 85mm x 7mm thick

OG173   Orbicular granite slab polished on one side

Prase rough PRR115 rock blocks Dimensions approximately 140 mm xPRR 115. Dimensions at widest points approximately 110 mm x 110 mm x 45 mm thick. Weighs 806 grams. Prase is a chrome rich chert. The green colour usually derives from minor mineral content, most commonly the green chromiferous muscovite mica, fuchsite. There are numerous Prase deposits in the Pilbara region of Western Australia.