Amethyst is a member of the Quartz family with a trigonal crystal system and a hardness of 7. Its color, which varies from pale to deep purple, is derived from the combination of trace amounts of iron and aluminum, plus natural or applied irradiation.
Amethyst has been prized for its beauty and its legendary energies for thousands of years. Neolithic people in Europe used it at least as early as 25,000 B.C., and in ancient Egypt it was made into beads and amulets.
Amethyst is an ideal stone for enhancement of one’s physical environment. Placing Amethyst clusters, geodes or crystals in one’s home, meditation room, car, etc., can bring the feeling that one is surrounded and protected by a ‘bubble of Light.’ For this reason Amethyst is an especially recommended stone for everyone from healers and psychologists to teachers and truck drivers. Wearing Amethyst maintains the inner space of one’s body and energy field in a state of balance and wellbeing.
Simmons, Robert; Ahsian, Naisha. The Book of Stones, Revised Edition: Who They Are and What They Teach (several pages). North Atlantic Books. Kindle Edition.