Polished Green Opal rock GRN96 Rhodo Dimensions approximately 110 mm x

Dimensions approximately 110 mm x 110 mm x 80 mm thick

Dimensions at widest points approximately 80 mm x 65 mm x 35 mm thick

195 mm x 100 mm x 48 mm

120mm x 100mm x 30-50mm thick

From near Kalgoorlie

Polished Green Opal rock GRN96 Rhodo Dimensions approximately 110 mm xGRN96 Green Opal & Magnesite rough rock, cut and polished on one side with a rough, naturally weathered back Dimensions at widest points approximately 120 mm x 55 mm x 35 mm thick Weighs 322 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.