Tourmaline, as one of the most colorful gems, is mainly divided into colorless, pink, red, green, yellow, brown and other colors. Sometimes the same crystal can appear in many colors or the colors at both ends of the same crystal are completely different, so it is called multicolor tourmaline. Because tourmaline is one of the precious stones, the price is relatively high, so there are a lot of artificially processed tourmalines on the market. Its counterfeiting means mainly occur on some rough tourmaline carvings and beads, in order to cover up some cracks and impurities.