As a healing stone Amethyst is helpful to calm an overworked and over stressed mind. It is thought to dispel negativity and create a peaceful environment.
It is also said to be helpful in ridding nightmares. Just hold the Amethyst crystal on the forehead for a minute and ask it to guide you through a peaceful sleep, then place it under your pillow.
This amethyst from India is mainly of the darker variety.
Each stone varies slightly and is approx. 18 - 28 mm in diameter.