Belonging among general gemstones, amazonite is a variety of microcline feldspar. Although feldspars are the most common minerals in the world (60%), only a few varieties are also gemstones. It occurs in the colors green, blue-green and green-white; it is transparent, but opaque. Colour probably arises from admixture of lead and water. Amazonite can be found in the North America, Brazil, as well as in Africa, China, India, Russia, Ukraine and Kazakhstan; in the Czech Republic, there are no significant deposits. Although it took its name from the Amazon River, no amazonite can be found anywhere near this river; it is likely that there was confusion with finding of jade or nephrite. Historically it has been used for about 4,000 years. Significant findings are from ancient Egypt; chapter 7 of the Book of the Dead was engraved into amazonite and also it was found in tomb of Pharaoh Tutankhamun (amazonite scarabeus ring). The stone was also important for the Assyrians. It was worn as a jewel in Central and South America before arrival of the Europeans. It is extremely important in the esoterics; however list of functions attributed to amazonite is far beyond limits of this text. It can be cleaned with soap and water followed by rinsing; avoid high temperatures, pressure and scratching it.