Polished Green Opal rock GRN101 beryl 125 mm x 95 mm

125 mm x 95 mm x 30 mm

Dimensions at widest points approximately 125 mm x 70 mm x 10 mm thick

Weight  is 746 grams

Dimensions at widest points approximately 150 mm x 85 mm x 70 mm thick

Polished Green Opal rock GRN101 beryl 125 mm x 95 mmGRN101 Green Opal & Magnesite rough rock, cut and polished on one side with a rough, naturally weathered back Dimensions at widest points approximately 90 mm x 55 mm x 30 mm thick Weighs 205 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.