Polished Green Opal slab GRN90 polished prehnite Half of a complete nodule
Baker’s notes & crumb story
Description
Half of a complete nodule
Weighs 348 grams
Weighs 552 grams
CH423 Chrysoprase slab polished on one side
Polished Green Opal slab GRN90 polished prehnite Half of a complete noduleGRN90 Green Opal & Magnesite slab, cut and polished on one side . Dimensions at widest points approximately 200 mm x 100 mm x 16 mm thick Weighs 442 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.