Tourmaline is a natural, colourful, semi-precious gemstone of the Cyclosilicates mineral group. It is found in a variety of colors ranging from black, brown, red, pink, purple, yellow to green, colorless and even bi color. Each color variety has its own metaphysical value in different astrological systems. For instance – Vedic astrology recommends Green tourmaline as the substitute of emerald gemstone. It is regarded as October birthstone in western culture. Gem healing therapy also advocates the use of Green Tourmaline for body detoxification and stress reduction.