Polished Marble Bar Chert MB109 oldest agate in the world NJT128 Tumble polished Noreena Jasper

NJT128  Tumble polished Noreena Jasper from Western Australia

XL114 Quartz crystal from the southern Pilbara

300 mm x 120 mm  x 11 mm

Dimensions at widest points approximately 145 mm x 55 mm x 10 mm thick

Tumble polished Chrysoprase

Polished Marble Bar Chert MB109 oldest agate in the world NJT128 Tumble polished Noreena JasperMB109 Marble Bar Chert. Cut and polished on one side with a rough, natural back. Dimensions at widest points approximately 140 mm x 60 mm x 45 mm thick. Weighs 718 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 one of the Earths oldest well preserved sedimentary