Polished Prehnite PR128 chalcedony Dimensions at widest points approximately

Dimensions at widest points approximately 140 mm x 95 mm x 30 mm thick

Weight is 337 grams

Dimensions at widest points approximately 110 mm x 90 mm x  45 mm thick

Desert Sunset is a banded iron formation that is comprised of alternating layers of red and yellow jasper and chert with narrow bands of black hematite

105 mm x 75 mm x 28 mm thick

Polished Prehnite PR128 chalcedony Dimensions at widest points approximatelyPR128. Prehnite rough rock, cut and polished on one side with a natural back. Half of a complete nodule ! Dimensions at widest points approximately 120 mm x 45 mm x 45 mm thick Weighs 296 grams. From the Kimberley region of Western Australia.