Polished fossil stromatolite. Asperia ashburtonia. ASP150 stand-up All reasonably uniform in size

All reasonably uniform in size (roughly 20 - 30 mm diameter} A bulk assortment

Weighs:  208 grams

with a small crystal lined cavity

It weigh 295 grams

Green Opal occurs at a location south of Kalgoorlie in the Eastern Goldfields of Western Australia

Polished fossil stromatolite. Asperia ashburtonia. ASP150 stand-up All reasonably uniform in sizeASP150. Fossil stromatolite . Cut and polished on one side with natural rough exterior on rear. Asperia ashburtonia from the Proterozoic "Duck Creek Dolomite". Age is approx. 2 billion years. From near Paraburdoo in Western Australia. Dimensions at widest points approx. 280 mm x 110 mm x 30 mm thick. It weighs 1,798 grams.