Polished Tiger Iron slab TI280 picture jasper All reasonably uniform in size

All reasonably uniform in size (roughly 20 - 30 mm diameter} A bulk assortment

Dimensions at widest points approximately 75 mm x 50 mm x 20 mm thick

Dimensions approximately 140 mm x 115 mm x 8 mm thick

Dimensions at widest points approximately 200 mm x 100 mm x 40 mm thick

Weighs 381 grams

Polished Tiger Iron slab TI280 picture jasper All reasonably uniform in sizeTI280 Tiger Iron slab, polished on one side . Dimensions at widest points approximately 120 mm x 55 mm wide x 8 mm thick. Weighs: 139 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.