Polished Green Opal slab GRN99. #brecciated Weighs: 227 grams

Weighs:  227 grams

Weight 554 grams

RH252  A slab

Dimensions at widest points approximately 110 mm x 40 mm x 30 mm thick

Dimensions at widest points approximately 110 mm x 80 mm x 7 mm thick

Polished Green Opal slab GRN99. #brecciated Weighs: 227 gramsGRN99 Green Opal & Magnesite slab, cut and polished on one side . Dimensions at widest points approximately 90 mm x 70 mm x 11 mm thick Weighs 121 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..