Amethyst Gemstone meaning
Crystalline quartz in shades of purple, lilac or mauve is called amethyst, a stone traditionally worn to guard against drunkeness and to instill a sober mind. The word amethyst comes from the Greek meaning "without drunkenness" and amethyst is believed to protect one from poison.
Power Stone
It is used as a dream stone and to help insomnia. Put an amethyst under your pillow to bring about pleasant dreams, or rub it across your forehead to offer relief from a headache.