(metallurgy). To separate a metal or a mineral from an ore by various chemical or mechanical methods. (pharmacology). A pharmaceutical preparation obtained by dissolving the active constituents of a drug with a suitable menstruum, evaporating the solvent, and adjusting to prescribed standards.
Tibetans consider amethyst sacred to the Buddha and make prayer beads from it. Amethyst is considered the birthstone of February. In the Middle Ages, it was considered a symbol of royalty and used to decorate English regalia.
Amethyst is a stone of the mind which brings calmness and clarity. Amethyst is said to attune its wearer with intuition, feelings and values. It has long been regarded as an aid to sobriety and is useful for combating alcohol, food and other addictions. It is also thought to ease obsessive-compulsive behavior.