Green Amethyst (also called Prasiolite) is produced by careful heating of Brazilian amethyst. Green Amethyst has a pale green colour. Some natural sources green quartz has been found, however the green amethyst sold as gemstones is heat-treated. It strengthens peace and calm, and brings generosity, growth, health, happiness, harmony, stability, and fertility. green Amethyst also promotes balance and restoration of the nervous system. It is a birthstone of people born in February.