One of the most widely recognized and unmistakable minerals, Amethyst has been sought after since ancient times as a gemstone and decorative object. Amethyst is a form of Quartz which gets its beautiful purple tint from the substitution of silicone for iron due to irradiation. It is found in a wide range of shades from deep purple to pale violet and even pink, with color intensity usually deepest at the termination or tip of each crystal.