Amazonite is a bluish-green to greenish-blue color variety of microcline, a potassium-rich member of the feldspar mineral group. It has been used as a gem for over 2000 years and has been found in archaeological excavations of ancient Egypt and Mesopotamia. Amazonite is found in small deposits in several parts of the world. Deposits are known in the United States, Afghanistan, Australia, Brazil, Canada, China, Ethiopia, Madagascar, Namibia, Norway, Poland, Russia, and Sweden.