Polished Tiger Iron slab TI278 oldest agate in the world Dimensions at widest points approximately

Dimensions at widest points approximately 220 mm x 125 mm x 10 mm thick

CC158  Chrome chalcedony slab

Weighs 940 grams

Dimensions approximately 160 mm x 110 mm x approx  55 mm thick

Weighs 516 grams

Polished Tiger Iron slab TI278 oldest agate in the world Dimensions at widest points approximatelyTI278 Tiger Iron slab, polished on one side . Dimensions at widest points approximately 100 mm x 45 mm wide x 8 mm thick. Weighs: 87 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.