Polished fossil stromatolite slab. Strelley Pool Formation SPF141 rare agate Dimensions at widest points approximately

Dimensions at widest points approximately 170 mm x 90 mm x 90 mm thick

Dimensions at widest points approximately 59 mm x 47 mm x 16 mm thick

Dimensions at widest points approximately 145 mm x 65 mm x 60 mm thick

CH461  Chrysoprase slab

Dimensions at widest points approximately 90 mm x 70 mm x 8 mm thick

Polished fossil stromatolite slab. Strelley Pool Formation SPF141 rare agate Dimensions at widest points approximatelySPF141. 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. 230 mm x 140 mm x 12 mm thick. Weighs 659 grams.