SKU: 75677170639
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Prase is a chrome-rich chert
Dimensions at widest points approximately 140 mm x 90 mm x 60 mm thick
Annular rings with heart visible
It weighs 288 grams
The green colouration is caused by traces of nickel and/or chromium
Polished Tiger Iron TI294 #brecciated Prase is a chrome-rich chertTI294 Tiger Iron rough rock, cut and polished on one side with a natural rough back. Dimensions at widest points approximately 95 mm x 25 mm wide x 30 mm thick. Weighs: 169 grams From the Cleaverville Formation, Ord Ranges near Port Hedland, Western Australia. Age is over 3 billion years. Tiger iron is a banded iron formation (BIF) or jaspilite that has alternating layers of black and brown hematite magnetite, red jasper and chatoyant golden tiger eye.