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9 pieces rough Dendritic Opal
Weight is 865 grams
Dimensions at widest points approximately 120 mm x 70 mm x 40 mm thick
CH456 Chrysoprase slab
CC155 Chrome chalcedony slab
Polished Tiger Iron slab TI394 crystophase 9 pieces rough Dendritic OpalTI394 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 140 mm x 90 mm x 9 mm thick. Weighs: 340 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.