Natural agate offers wide range of Amethyst Chips Healing Yoga Bracelet online. Amethyst is a violet variety of quartz. The ancient Greeks wore amethyst and carved drinking vessels from it in the belief that it would prevent intoxication. Amethyst is a semiprecious stone often used in jewelry and is the traditional birthstone for February. In theory, the negative energy leaves the wearer and becomes trapped in the bracelet. Positive energy then emanates from each of the stones and re balances the chakras.