Polished Green Opal slab GRN113 stripey Weighs: 169 grams

Weighs:  169 grams

Dimensions at widest points approximately 120 mm x 105 mm x 80 mm thick

Under shortwave UV light it fluoresces a deep red colour

Dimensions at widest points approximately 110 mm x 65 mm x 50 mm thick

CH424  Chrysoprase nodule

Polished Green Opal slab GRN113 stripey Weighs: 169 gramsGRN113 Green Opal & Magnesite slab, cut and polished on one side . Dimensions at widest points approximately 150 mm x 100 mm x 11 mm thick Weighs 318 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..