Polished fossil stromatolite slab. Asperia ashburtonia. ASP157 Jasper Dimensions at widest points approximately

Dimensions at widest points approximately 195 mm x 85 mm x 65 mm thick

OPS109  Opalised Serpentine rough rock

Dimensions at widest point approximately 165 mm x 165 mm x 12 mm

Box measures 43 cm x 287 cm x 5 cm deep

Dimensions at widest points approximately 200 mm high x 170 mm wide x 80 mm thick

Polished fossil stromatolite slab. Asperia ashburtonia. ASP157 Jasper Dimensions at widest points approximatelyASP157. 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. 140 mm x 130 mm x 11 mm thick. It weighs 341 grams.