Polished fossil stromatolite. Alcheringa narrina. ALC160 polished noreena Dimensions at widest points approximately

Dimensions at widest points approximately 70 mm x 55 mm x 25 mm thick

Interesting reddish colours

CH438  Chrysoprase  slab polished  on one side

Dimensions at widest points approximately 85 mm x 65 mm x 20 mm thick

Dimensions at widest points approximately 100 mm x 80 mm x 55 mm thick

Polished fossil stromatolite. Alcheringa narrina. ALC160 polished noreena Dimensions at widest points approximatelyALC160 Fossil stromatolite , polished on one side with natural weathered exterior on rear. Alcheringa narrina from the Archaean Meentheena Member within the Tumbiana Formation. Age is approx. 2. 7 billion years. From near Nullagine in Western Australia. Dimensions at widest points approx. 110 mm x 70 mm x 30 mm thick. Weighs 404 grams.