Polished Marble Bar Chert slab MB108 prehnite Dimensions at widest points approximately

Dimensions at widest points approximately 150 mm x 110 mm x 11 mm thick

Weighs 966 grams

54 pieces of tumble polished Wyloo Amethyst

Weighs:  150 grams

It weighs 342 grams

Polished Marble Bar Chert slab MB108 prehnite Dimensions at widest points approximatelyMB108 Marble Bar Chert slab polished on one side . Dimensions at widest points approximately 130 mm x 65 mm x 16 mm thick. Weighs 265 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 of