Polished Marble Bar Chert MB118 crystoprase OG185 Polished orbicular granite with

OG185   Polished orbicular granite with natural rough back

BL249  Blue Lepidolite display specimen

Dimensions at widest points approximately 190 mm x 175 mm and 70 mm thick

120 mm x 55 mm x 45 mm thick

Polished Marble Bar Chert MB118 crystoprase OG185 Polished orbicular granite withMB118 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 140 mm x 120 mm x 60 mm thick. Weighs 2,000 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