Amethyst is official birthstone for February as adopted by the American National Association of Jewelers in 1912. It is also the birth stone for the Zodiac sign of Pisces. Amethyst is suggested as a gem to give on the 4th, 6th and 17th wedding anniversaries.
It has been used for hearing disorders, insomnia, headaches and other pain. Some sources suggest it is used to stabilize mental disorders. Amethyst powers include: dreams, healing, peace, love, spiritual upliftment, courage, psychism, protection against thieves, and happiness.