Green amethyst is amethyst where the amethyst mineral has a higher than normal iron content within the stone. This iron content causes some of the stones to be green when found, although this is rare. More often, the natural amethyst is heat treated to produce the green color. Only certain amethyst stones from mines with a higher iron mineral content in the amethyst will produce the green color change.
Green Amethyst
Green Amethyst
