Polished Green Opal slab GRN105 Rhodonite Approximate diameter at widest points

Approximate diameter at widest points is 115 mm

Dimensions at widest points approximately 160 mm x 115 mm x 12 mm thick

Approximate dimensions at widest points 110 mm  x 70 mm  x 45 mm thick

Weighs 315grams

From  Yerilla

Polished Green Opal slab GRN105 Rhodonite Approximate diameter at widest pointsGRN105 Green Opal & Magnesite slab, cut and polished on one side . Dimensions at widest points approximately 140 mm x 80 mm x 12. 5 mm thick Weighs 224 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..