Amethyst is a form of Quartz. All it takes to transform ordinary clear quartz into amethyst is tiny amounts of Iron and Aluminum.
Known also as "Metamorphosis" the ancient healer of all levels of body, mind, and spirit. Amethyst purifies, cleanses and renews, it transforms lower energies into higher ones, it protects against psychic manipulation.
Amethyst was thought to encourage celibacy and symbolize piety, amethyst was very important in the ornamentation of Catholic and other churches in the Middle Ages. It was, in particular, considered to be the stone of bishops and bishops still often wear amethyst rings.
In Tibet, amethyst is considered to be sacred to Buddha and rosaries are often fashioned from it.
The Greek work "amethystos" basically can be translated as "not drunken." Amethyst was considered to be a strong antidote against drunkenness, which is why wine goblets were often carved from it! The gemstone still symbolizes sobriety.
Wear when sleeping or when awake to reduce anger, impatience, and nightmares.