Polished Green Opal slab GRN113 polished noreena Dimensions at widest point approximately

Dimensions at widest point approximately 80 mm x 70 mm x 8

DO154 Dendritic Opal rough rock

Please note that pink opal is a very fragile stone with many unseen internal fractures

TI369   Tiger Iron rough rock

Brockman in the Pilbara region of Western Australia

Polished Green Opal slab GRN113 polished noreena Dimensions at widest point approximatelyGRN113 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..