Prase rough PRR107 chalcedony Dimensions at widest points approximately

Dimensions at widest points approximately 180 mm x 90 mm x 11 mm thick

Sometimes it exhibits striking contrasting veins of magnesite

Dimensions at widest points approximately 140 mm x 130 mm x 80 mm thick

From Wyloo Station in the Pilbara region of Western Australia

190 mm x 130 mm x 10mm thickness

Prase rough PRR107 chalcedony Dimensions at widest points approximatelyPRR 107. Dimensions at widest points approximately 210 mm x 150 mm x 80 mm thick. Weighs 3,235 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.