10mm
Amethyst is a natural tranquilizer—it relieves stress and strain, soothes irritability, balances mood swings, dispels anger, rage, fear and anxiety. It also alleviates sadness and grief, and dissolves negativity, creating a peaceful environment. Amethyst activates spiritual awareness, opens intuition and enhances psychic abilities.
As a healing stone it is said to be helpful in ridding nightmares. Also helpful to calm an overworked and over stressed mind.