Also known as tourmaline, tourmaline is a mixed gemstone that belongs to precious ore that is second only to diamonds and emeralds. Tourmaline is a non-renewable resource. The price has quadrupled in two years. The more top-edge tourmaline, the greater the future appreciation space. Therefore, there are more and more fakes in the market. So, how should we distinguish the true and false of the tourmaline?
1. The hardness of tourmaline is greater than that of glass. You can use the tourmaline to draw a light on the glass. If there is no scratch on the glass, the tourmaline is fake. 2, true tourmaline often has obvious dichroism, visible double shadow; visible tubular wrap or cotton batt in the body, the cross section of the crystal is a curved triangle. These characteristics are not found in the imitation goods, the worker's dyed tourmaline, due to the color stagnation, lacks the natural treasure of the "Baoguang."
3, friction, after the friction of the tourmaline can absorb dust, paper scraps, etc.
4, common tourmaline counterfeit products are crystal, fluorite, glass, etc., tourmaline is rich in color, but no purple only purple, and crystal and fluorite purple are very common. Moreover, the brightness of the tourmaline is much higher than the others. Bubbles or dyes are often found in glass and are easy to distinguish.
5, chromaticity is obvious. Looking at the tourmaline at different angles under strong light, the color tone and brightness will change, while the amethyst is not obvious and the glass will not appear.
6. After the gelatin-treated tourmaline is enlarged, there will be a similar spider-like etched pattern of jadeite B. The internal clearness is poor and there is a colloidal mixed feeling.
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