Amethyst has a beautiful, soft, calming vibration and is a natural stress reliever. It aids in purification, wards off negative energies, encourages trust, balance and stability, supports overcoming addictions & aids in psychic development/intuition. When placed beside the bed it helps to calm the mind/body/nerves encouraging a peaceful sleep.
Chakra - Crown + Third Eye
Astrology - Pisces, Virgo, Aquarius + Capricorn