Polished Green Opal slab GRN112 lemon chrysoprase 160 mm x 75 mm

160 mm x 75 mm x 70 mm

cut and polished on one side with a cut base so that it stands vertically

brown iron oxides and druzy quartz pockets

Slightly tapering thickness of 6 - 9 mm

Weight 591 grams

Polished Green Opal slab GRN112 lemon chrysoprase 160 mm x 75 mmGRN112 Green Opal & Magnesite slab, cut and polished on one side . Dimensions at widest points approximately 110 mm x 90 mm x 10 mm thick Weighs 171 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..