Polished Green Opal rock GRN114 dup-review-publication Dimensions at widest points approximately

Dimensions at widest points approximately 130 mm x 130 mm x 90 mm thick

Dimensions at widest points approximately 140 mm x 60 mm x 55 mm thick

Dimensions at widest points approximately 130 mm x 110 mm x 35 mm thick

Weighs 187 grams

Polished Green Opal rock GRN114 dup-review-publication Dimensions at widest points approximatelyGRN114 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.