Polished Tiger Iron slab TI309 stromatolite DO190 Dendritic Opal slab polished

DO190  Dendritic Opal slab polished on one side

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

CH422  Chrysoprase  slab polished  on one side

130 mm x 90 mm x 8 mm

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

Polished Tiger Iron slab TI309 stromatolite DO190 Dendritic Opal slab polishedTI309 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.