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Chrome-bevel sheet on grid paper — specs and return notes filed under the bay.
OJ178 A rough rock
Unusual colouration caused by natural iron oxide weathering
Dimensions approximately 160 mm x 95 mm x 12 mm thick
It weighs 204 grams
Dimensions at widest points approximately 120 mm x 60 mm wide x 7 mm thick
Polished Green Opal rock GRN104 polished Noreena Jasper OJ178 A rough rockGRN104 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.