Polished Green Opal rock GRN89 asperia From our mining lease on

From our mining lease on Ninghan Station in the Midwest region of Western Australia

Magnesite (Lemon chrysoprase) rough rock

Dimensions at widest points approximately 55 mm  x 50 mm wide x 5 mm thick

Dimensions at widest points approximately 290 mm x 165 mm x 10 mm thick

Weighs:  317 grams

Polished Green Opal rock GRN89 asperia From our mining lease onGRN89 Green Opal & Magnesite rough rock, cut and polished on one side with a rough, naturally weathered back Dimensions at widest points approximately 210 mm x 60 mm x 65 mm thick Weighs 1,406 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.