Polished Green Opal slab GRN105 Opalite 140 mm x 100 mm

140 mm x 100 mm x 35 mm thick

Dimensions at widest points approximately 90 mm x 80 mm x 70 mm deep

135 mm x 85 mm x 50 mm thick

DO189  Dendritic Opal slab polished on one side

Weighs 532 grams

Polished Green Opal slab GRN105 Opalite 140 mm x 100 mmGRN105 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..