Polished Tiger Iron slab TI322 purple chalcedony Face is approximately 90mm x

Face is approximately 90mm x 50mm and  9mm thick

Approximate dimensions at widest points 100 mm  x 70 mm  x 55 mm thick

Dimensions at widest points approximately 160 mm x 80 mm x 65 mm thick

SPF123   Fossil stromatolite  polished on one side with natural weathered exterior

Polished Tiger Iron slab TI322 purple chalcedony Face is approximately 90mm xTI322 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 95 mm x 75 mm x 8. 5 mm thick. Weighs: 157 grams From the Cleaverville Formation, Ord Ranges near Port Hedland, Western Australia. Age is over 3 billion years. Tiger iron is a banded iron formation (BIF) or jaspilite that has alternating layers of black and brown hematite magnetite, red jasper and chatoyant golden tiger eye.