Polished Green Opal rock GRN103 Rhodonite It weighs 253 grams

It weighs 253 grams

Approximate dimensions at widest points 150 mm  x 100 mm  x 645 mm thick

Weighs 366 grams

From Koolyanobbing

110 mm x 80 mm x 30 mm

Polished Green Opal rock GRN103 Rhodonite It weighs 253 gramsGRN103 Green Opal & Magnesite rough rock, cut and polished on one side with a rough, naturally weathered back Dimensions at widest points approximately 170 mm x 70 mm x 80 mm thick Weighs 763 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. Sometimes it exhibits striking contrasting veins of magnesite.