Amethyst is an extremely powerful and protective stone with high spiritual vibration. It guards against physic attacks, transmuting this energy into love. A natural tranquilizer, Amethyst blocks geopathic stress and negative environmental energies. Its serenity enhances higher state of consciousness and meditation. Amethyst has strong healing and cleansing powers, and enhances spiritual awareness.
Amethyst is extremely beneficial to the mind, calming and stimulating as appropriate. This stone facilitates decision making process, bringing in common sense and spiritual insights, and putting decisions and insights into practice.
Mentally, it helps you feel less scattered, more focused and and in control of your faculties. It enhances the stimulation of new ideas and connects cause with effects.
Hall, Judy. The Crystal Bible (p.116).