Polished Chert Breccia slab CB119 magneprase Dimensions approximately 130 mm x

Dimensions approximately 130 mm x 120 mm x 90 mm thick

PC112 Chalcedony slab

Weighs 899 grams

Dimensions at widest points approximately 240 mm  x 160 mm x 10 mm thick

Polished Chert Breccia slab CB119 magneprase Dimensions approximately 130 mm xCB119 Chert Breccia polished thick slab with a cut base. Dimensions at widest points approximately 200 mm x 170 mm x 30 mm thick. Weighs 1,807 grams. This breccia consists of innumerable angular fragments of assorted rock types but predominantly jasper, quartz and chert. It occurs in the Pinyalling Hills which are located in the Midwest region of Western Australia, approximately 400 kms. north of Perth.