Polished Green Opal slab GRN86 Kumarina Agate From our mining leases near

From our mining leases near Grant's Patch in the Eastern Goldfields region of Western Australia

IRR 123    Fossil stromatolite slab

185 mm x 65 mm x 8 mm thick

Weight is 93 grams

Dimensions at widest points approximately 125 mm  x 50 mm wide x 6 mm thick

Polished Green Opal slab GRN86 Kumarina Agate From our mining leases nearGRN86 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.