Amethyst- Protection, Spiritual Awareness, Harmony. Whether you’re a crystal newbie or a seasoned expert, you know amethyst is a heavy hitter. This all purpose stone is popular for a reason, known as an amulet of protection, amethyst increases spiritual awareness and encourages a more peaceful state of mind. Amethyst transmutes lower vibrations to harmonious energy, easing anxiety and depression by bringing clarity to the mind, body, and spirit.