Polished Green Opal rock GRN104 jelly bean jasper Weighs 904 grams

Weighs 904 grams

Weighs 112 grams

280 mm x 140 mm  x 11 mm

Weighs 64 grams

Dimensions at widest points approximately 150 mm x 100 mm x 870 mm thick

Polished Green Opal rock GRN104 jelly bean jasper Weighs 904 gramsGRN104 Green Opal & Magnesite rough rock, cut and polished on one side with a rough, naturally weathered back Dimensions at widest points approximately 140 mm x 100 mm x 70 mm thick Weighs 1,334 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.