Polished Magnesite specimen. MAP168 #gemstone has now been largely altered

has now been largely altered to hematite

Dimensions at widest points approximately 160 mm x 75 mm x 12 mm thick

Weighs 450 grams

SPF126   Fossil stromatolite  polished on one side with natural weathered exterior

Weighs 683 grams

Polished Magnesite specimen. MAP168 #gemstone has now been largely alteredMAP168. Magnesite (Lemon chrysoprase) rough rock, cut and polished on one side with a natural back. Dimensions at widest points approximately 100 mm x 60 mm x 35 mm thick. Weighs 366 grams. The subtle lime green colouration is caused by the presence of nickel mineralisation. From Eucalyptus, north of Kalgoorlie , Western Australia.