Polished Green Opal slab GRN106 jelly bean jasper The interesting cylindrical cavities are

The interesting cylindrical cavities are all that remain of fossil belemnites which were a squid-like creature with a tapering torpedo or bullet shaped body

Dimensions at widest points approximately 155 mm x 110 mm x 55 mm thick

80 mm x 60 mm  x 7

Dimensions at widest points approximately 95 mm x 40 mm x 20 mm thick

CW119   Chinese Writing Stone slab

Polished Green Opal slab GRN106 jelly bean jasper The interesting cylindrical cavities areGRN106 Green Opal & Magnesite slab, cut and polished on one side . Dimensions at widest points approximately 225 mm x 160 mm x 13. 5 mm thick Weighs 570 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..