Polished Tiger Iron TI383 chrysophase Dimensions at widest points approximately

Dimensions at widest points approximately 50 mm x 40 mm x 25 mm thick

150 mm x 60 mm  x 8 mm

NJ447   Noreena Jasper slab

BJ118  Polished "Black Jade" A trade name for metamorphosed magnesian tholeiite (basalt)

Dimensions at widest points approximately 110 mm x  100 mm x 9 mm thick

Polished Tiger Iron TI383 chrysophase Dimensions at widest points approximatelyTI383 Tiger Iron rough rock, cut and polished on one side with a rough natural back. Dimensions at widest points approximately 120 mm x 65 mm x 35 mm thick. Weighs: 639 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.