Amethyst is a stone of spiritual protection and purification. It can be an aid to curbing over indulgence and giving up bad habits. It can be used to assist one in quitting smoking, drinking and drug use.
It stimulates crown chakra and is an aid to meditation, helping one to still one’s thoughts and move into higher states of consciousness.
It can clear one’s energy field of negative influences and attachments, and can there by facilitate the creation of an energetic “shield” – a field of spiritual light around the body that wards off the negativity in one’s environment.
Amethyst can bring the bring the feeling that one is surrounded and protected by a “bubble of light“. If one is ill, placing an amethyst specimen in one’s room can keep one’s healing space clear. Wearing Amethyst maintains the inner space of one’s body and energy field in a state of balance and well being. For spiritual protection, Amethyst works especially well when combined with Moldavite. The spiritual connection provided by Amethyst can be enhanced by Azestulite, Phenacite, Scolecite and Netrolite.
Source: The pocket book of stones by Robert Simmons