Polished Marble Bar Chert MB119 green 300 mm x 140 mm

300 mm x 140 mm x 10 mm thick

A bulk lot (65 stones) of dyed and heat treated Agate

BJ129  Polished "Black Jade" A trade name for metamorphosed magnesian tholeiite (basalt)

Weighs 1804 grams

Weighs 864 grams

Polished Marble Bar Chert MB119 green 300 mm x 140 mmMB119 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 220 mm x 145 mm x 70 mm thick. Weighs 3,919 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