Polished Green Opal slab GRN88 epidote Big display specimen

Big display specimen

Weighs 833 grams

Difficult to photograph due to the mirror black polish

RFJ132  Rhyolite (Rainforest Jasper) rough rock

Dimensions approximately 70 mm x 60 mm x 30 mm deep

Polished Green Opal slab GRN88 epidote Big display specimenGRN88 Green Opal & Magnesite slab, cut and polished on one side . Dimensions at widest points approximately 190 mm x 55 mm x 14 mm thick Weighs 1228 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.