Polished Marble Bar Chert MB106 outback jasper Dimensions approximately 130 mm x

Dimensions approximately 130 mm x 100 mm x 50 mm thick

80 mm x 65 mm  x 20 mm

Weighs 771 grams

BJ118  Polished "Black Jade" A trade name for metamorphosed magnesian tholeiite (basalt)

Weight 146 grams

Polished Marble Bar Chert MB106 outback jasper Dimensions approximately 130 mm xMB106 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 160 mm x 120 mm x 45 mm thick. Weighs 1,607 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