Polished fossil stromatolite slab. Asperia ashburtonia. ASP160 Polished Beryl Dimensions at widest points approximately

Dimensions at widest points approximately 175 mm x 130 mm x  9 mm thick

Dimensions at widest points approximately 140 mm x 80 mm x 12

Dimensions at widest points approximately 170 mm x 120 mm x 6 mm thick

Dimensions at widest points approximately 140 mm x 95 mm x 30 mm thick

Polished fossil stromatolite slab. Asperia ashburtonia. ASP160 Polished Beryl Dimensions at widest points approximatelyASP160 Fossil stromatolite slab, polished on one side. 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. 275 mm x 150 mm x 10 mm thick. It weighs 834 grams.