Polished Green Opal rock GRN89 Polished Beryl From our mining claim in

From our mining claim in the Pilbara region

Dimensions at widest points are approximately 140 mm x 45 mm x 40 mm

OJ129  A slab

8 billion years

Polished Green Opal rock GRN89 Polished Beryl From our mining claim inGRN89 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.