Polished Green Opal slab GRN109 Desert Sunset Approximate dimensions at widest points

Approximate dimensions at widest points 170 mm  x 160 mm  x 60 mm thick

Dimensions at widest points approximately 145 mm x 125 mm x 16 mm thick

Dimensions at widest points approximately 125 mm x 90 mm x 45 mm thick

Weighs 640 grams

SU138  Sunset Jasper rough rock

Polished Green Opal slab GRN109 Desert Sunset Approximate dimensions at widest pointsGRN109 Green Opal slab, cut and polished on one side . Dimensions at widest points approximately 95 mm x 70 mm x 11 mm thick Weighs 144 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.