Polished Green Opal slab GRN105 Opalite Weighs 367 grams

Weighs 367 grams

135 mm x 85 mm x 50 mm thick

Dimensions at widest points approximately 130 mm x 100 mm x 70 mm thick

Weighs 532 grams

Dimensions at widest points approximately 145 mm x 130 mm x 50 mm thick

Polished Green Opal slab GRN105 Opalite Weighs 367 gramsGRN105 Green Opal & Magnesite slab, cut and polished on one side . Dimensions at widest points approximately 140 mm x 80 mm x 12. 5 mm thick Weighs 224 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..