Polished Marble Bar Chert slab MB111 crazy lace It weighs 4

It weighs 4

170 mm x 85 mm  x 9 mm

AMU111   Amethyst geode portion from Artigas

CH437  Chrysoprase  slab polished  on one side

Approximate dimensions at widest points 120 mm  x 65 mm  x 60 mm thick

Polished Marble Bar Chert slab MB111 crazy lace It weighs 4MB111 Marble Bar Chert slab polished on one side . Dimensions at widest points approximately 135 mm x 120 mm x 9. 5 mm thick. Weighs 369 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 rocks. From near the town