Identification of jewelry tourmaline

Tourmaline is a mid-range gems, but the pink and bright blue tourmaline more expensive, it also appears to take the imitation goods. Common risk imitations there are two types, one is a colorless tourmaline from artificial colors; one for red glass processing. Identification method is really tourmaline tend to have significant dichroism, showing double shadow; tubular body visible inclusions or cotton wool was, was a cambered cross-section crystal triangles. These features are to take imitation goods do not have the workers dyeing tourmaline, because the color hanging stagnation, lack of natural tourmaline "Glory," it is not difficult to identify.