Prase rough PRR119 polished magneprase NJ430 Noreena Jasper Rock Block

NJ430 Noreena Jasper Rock Block

Dimensions at widest points approximately 90 mm x 90 mm x 90 mm thick

4 billion years

Dimensions at widest points approximately 100 mm  x 45 mm wide x 8 mm thick

Dimensions at widest points approximately 160 mm x 130 mm x 40 mm thick

Prase rough PRR119 polished magneprase NJ430 Noreena Jasper Rock BlockPRR 119. Dimensions at widest points approximately 160 mm x 130 mm x 60 mm thick. Weighs 1,739 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.