Polished fossil stromatolite slab. Strelley Pool Formation SPF137 stripey jasper Dimensions at widest points approximately

Dimensions at widest points approximately 80 mm x 65 mm x 25 mm thick

Dimensions at widest points approximately 190 mm x 120 mm and 50 mm thick

cut and polished on one side with  a cut base to stand on

170 mm x 95 mm  x 11 mm

Dimensions at widest points approximately 140 mm x 100 mm x 50 mm thick

Polished fossil stromatolite slab. Strelley Pool Formation SPF137 stripey jasper Dimensions at widest points approximatelySPF137. Fossil stromatolite slab, polished on one side. These are the oldest known fossils on Earth. From the Strelley Pool Formation in the Pilbara region of Western Australia. Age is approx. 3. 4 billion years. Dimensions approx. 260 mm x 120 mm x 13 mm thick. Weighs 786 grams.