Polished Green Opal rock GRN110 polished rock From Mindoolah

From Mindoolah

Dimensions at widest points approximately 135 mm x 100 mm x 80 mm thick

Fossil stromatolite  polished on one side with natural weathered exterior

90 mm x 40 mm  x 20 mm

MK452   Mookaite cut and polished on one side with a rough natural back

Polished Green Opal rock GRN110 polished rock From MindoolahGRN110 Green Opal rough rock, cut and polished on one side with a rough, naturally weathered back Dimensions at widest points approximately 85 mm x 50 mm x 45 mm thick Weighs 279 grams Green Opal occurs at a location south of Kalgoorlie in the Eastern Goldfields of Western Australia. The green colouration is caused by traces of nickel and or chromium.