Polished Golden Amphibolite GA155 Noreena The environment they grew in

The environment they grew in was possibly freshwater algal marshes

cut and polished at right angles to crystal growth

1 billion years

Dimensions at widest points approximately 130 mm x 80 mm x 50 mm thick

It weighs 219 grams

Polished Golden Amphibolite GA155 Noreena The environment they grew inGA155 Golden Amphibolite rock, cut and polished on one side with a rough, natural back. Dimensions at widest points approximately 120 mm x 60 mm x 35 mm thick. Weighs 259 grams. The amphibolite, most likely grunerite , has now been largely altered to hematite, goethite and quartz and it displays a beautiful golden iridescence. Also called "Gold Leaf Stone". It occurs in the Pilbara region of Western Australia on Abydos Station approximately 120 km