Polished Marble Bar Chert MB124 aquamarine Dimensions at widest points approximately

Dimensions at widest points approximately 125 mm  x 50 mm wide x 6 mm thick

GRN96  Green Opal & Magnesite rough rock

Dimensions at widest points approximately 130 mm x 60 mm x 10

Dimensions at widest points approximately 150 mm x 65 mm x 50 mm thick

PC129 Chalcedony slab

Polished Marble Bar Chert MB124 aquamarine Dimensions at widest points approximatelyMB124 Marble Bar Chert. Cut and polished on one side with a rough, natural back and a cut base to stand as a display specimen ! Dimensions at widest points approximately 225 mm x 130 mm x 65 mm thick. Weighs 3,237 grams. Marble Bar chert is a finely banded, iron rich silica rock from the Marble Bar Chert Member (Warrawoona Group) of Western Australia. Formed in shallow Archean seas, it dates to the Paleoarchean (~3. 46 billion years old), making it