Polished Green Opal slab GRN90 polished snakeskin Approximate dimensions at widest points

Approximate dimensions at widest points 120 mm long  x 100 mm  x 30 mm thick

PA262  Pilbara Agate rough rock

Weighs 984 grams

A bulk assortment of different sizes

140 mm x 90 mm x 8 mm thick

Polished Green Opal slab GRN90 polished snakeskin Approximate dimensions at widest pointsGRN90 Green Opal & Magnesite slab, cut and polished on one side . Dimensions at widest points approximately 200 mm x 100 mm x 16 mm thick Weighs 442 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.