Extremely powerful, amethyst is beneficial to the mind, calming or stimulating as appropriate. This stone facilitates the decision making process, bringing in common sense and spiritual insights. Approx. Length 10in., 55mm Approx. Width 4in., 95mm Approx. Height 10in., 55mm This formation is a Generator.A generator crystal optimizes healing energy. Found in United States, Russia, Britian, Canada, Brazil, Mexico, Russia, Sri Lanka, Uruguay, East Africa, Siberia, India.