Identification of tourmaline

Tourmaline is a mid-range gemstone, but because of the more expensive pink and fresh blue tourmaline, there are also fakes. There are two common types of common imitation products, one is artificial coloring with colorless tourmaline; the other is processed with red glass. The method of identification is that the true tourmaline often has obvious dichroism, and the double shadow is visible; the tubular wrap or cotton batt is visible in the body, and the cross section of the crystal is a triangular triangle. These characteristics are not found in the imitation goods. The tourmaline dyed by the workers is not difficult to identify because of the color stagnation and the lack of natural tourmaline.