Amazonite, also known as the "Amazon Stone," is a semi-opaque variety of microcline feldspar. Its name is derived from the Amazon River in South America, where it was originally thought to be discovered. However, Amazonite can be found in various parts of the world, including the United States, Canada, Russia, and Madagascar. Its striking shades of green and blue make it a sought-after gem for both its beauty and metaphysical properties.