Polished Green Opal rock GRN114

GRN114  Green Opal rough rock, cut and polished on one side with a rough, naturally weathered back

Dimensions at widest points approximately 110 mm x 90 mm x 50 mm thick

Weighs 574 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.