Polished Green Opal rock GRN96 Rhodo Dimensions at widest points approximately

Dimensions at widest points approximately 160 mm x 90 mm x 70 mm thick

170 mm x 55 mm  x 45 mm

195 mm x 100 mm x 48 mm

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

120mm x 100mm x 30-50mm thick

Polished Green Opal rock GRN96 Rhodo Dimensions at widest points approximatelyGRN96 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.