Polished fossil stromatolite. Asperia ashburtonia. ASP156 asperia ashburtonia 130 mm x 75 mm

130 mm x 75 mm x 30 mm thick & weighs 604 grams

CC163  Chrome chalcedony rough rock

Dimensions at widest points approximately 115 mm x 55 mm x 25 mm thick

Dimensions at widest point approximately 125 mm x 120 mm x 9

120 mm x 105 mm x 7 mm thick

Polished fossil stromatolite. Asperia ashburtonia. ASP156 asperia ashburtonia 130 mm x 75 mmASP156. 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. 100 mm x 95 mm x 25 mm thick. It weighs 477 grams.