Polished Green Opal rock GRN115

GRN115  Green Opal rough rock, cut and polished on one side with a rough, naturally weathered back

Dimensions at widest points approximately 125 mm x 100 mm x 50 mm thick

Weighs 686 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.