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CC121 Chrome chalcedony slab
Quartz vein intrusion in this piece
Museum quality specimen
Weighs 398 grams
80 mm x 35 mm x 20 mm
Polished Green Opal display specimen GRN81 brecciated CC121 Chrome chalcedony slabGRN81 Green Opal & Magnesite rough rock, cut and polished on one side with a rough, naturally weathered back and a cut base to stand on. Dimensions at widest points approximately 155 mm x 80 mm x 60 mm thick Weighs 1,216 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