Stromatolitic Dolomite SD157 rock block cut & polished on one

cut & polished on one side with natural back

Dimensions at widest points approximately 95 mm x 40 mm x 20 mm thick

It weighs 230 grams

CLT106  Tumble polished Crazy Lace Agate from Western Australia

170 mm x 100 mm x 9 mm

Stromatolitic Dolomite SD157 rock block cut & polished on oneSD157 Stromatolitic Dolomite slab, polished on one side. Sections consist of a chaotic mixture of dolomite and or stromatolite fragments set in a matrix of mudstone and or coarsely crystalline dolomite . The pink and red colouration can be attributed to the presence of finely disseminated iron oxides . It often contain layers and nodules of red chert. From the Irregully Formation, Western Australia. Dimensions approximately 130mm x 100mm x 7mm thick