Polished Chert Breccia slab CB115 Polished dendritic opal Dimensions at widest points approximately

Dimensions at widest points approximately 130 mm x 90 mm x 11 mm thick

Weighs:  235 grams

GRN94  Green Opal & Magnesite rough rock

Dimensions at widest points approximately 150 mm x 70 mm x 55 mm thick

Rough Gaspeite

Polished Chert Breccia slab CB115 Polished dendritic opal Dimensions at widest points approximatelyCB115 Chert Breccia slab, cut and polished on one side . Dimensions at widest points approximately 200 mm x 135 mm x 7. 5 mm thick. Weighs 416 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 200 miles north of Perth.