Polished Marble Bar Chert MB103 chrysoprase Dimensions at widest points approximately

Dimensions at widest points approximately 125 mm x 115 mm x 35 mm thick

Weighs 2 kgs

Weighs 420 grams

130 mm x 115 mm  x 8

Polished Marble Bar Chert MB103 chrysoprase Dimensions at widest points approximatelyMB103 Marble Bar Chert. Cut and polished on one side with a rough, natural back. Dimensions at widest points approximately 160 mm x 100 mm x 75 mm thick. Weighs 1,205 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