Polished Tiger Iron slab TI309 stromatolite Approximate weight of each piece

Approximate weight of each piece is between 82 and 165 grams

Dimensions at widest points approximately 125 mm x 105 mm and 40 mm thick

Dimensions at widest points approximately 150 mm x 110  mm x 7 mm thick

CH422  Chrysoprase  slab polished  on one side

Dimensions at widest points approximately 140 mm x 70 mm x 10 mm thick

Polished Tiger Iron slab TI309 stromatolite Approximate weight of each pieceTI309 Tiger Iron slab, polished on one side. Amazing folding ! Dimensions at widest points approximately 95 mm x 70 mm x 7 mm thick. Weighs: 135 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.