The amethyst is colored in a pale violet to a dark blue, but under a lot of heat it can turn brown or dark yellow. Amethysts commonly grow in geodes, tops, caves, and druses.

The amethyst has a calming effect on the nerves and heart, and it also improves the ability to concentrate. Amethyst under the pillow helps you to have a restful and peaceful sleep, as it protects against nightmares. Amethyst stabilizes blood pressure, whether it's too high or too low.