Amethyst Meaning: Amethyst is a variety of quartz. It's known as an all around healing stone. It is also known to promote intelligence and brain power. It differs from ordinary quartz crystal because of its purple color (Shades may very from Dark to light purple). The purple color is due to the traces of manganese or iron, Amethyst cab be found manly in Brazil but also in Uruguay, India and Sri Lanka. Large amethyst geode are most commonly found in southern Brazil.