Polished Marble Bar Chert MB109 beryl Dimensions at widest points approximately

Dimensions at widest points approximately 140 mm x 110 mm x 75 mm thick

Approximate weight of each piece is between 68 and 180 grams

It weighs 177 grams

145 mm x 90 mm x 6

Polished Marble Bar Chert MB109 beryl Dimensions at widest points approximatelyMB109 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