Polished Green Opal slab GRN86 #google 100 mm x 50 mm

100 mm x 50 mm x 30 mm thick

190 mm x 95 mm x 70 mm thick

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

Dimensions at widest points approximately 110 mm x 70 mm x 55 mm thick

cherry pink

Polished Green Opal slab GRN86 #google 100 mm x 50 mmGRN86 Green Opal & Magnesite slab, cut and polished on one side . Dimensions at widest points approximately 110 mm x 60 mm x 11 mm thick Weighs 107 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.