When the crystal clear crystal becomes the favorite of the girls in the streets, a variety of jewelry with crystal signs will emerge. Many consumers say that crystals are “flooding†in the market, and how consumers should identify the true and false and the pros and cons. Xiaobian here has a few tricks "soil method" to teach everyone, generally can see a Ni Duan.
1. Look at the form. In the process of forming natural crystals, they are often affected by the environment and contain some impurities. When viewed from the sun, you can see the faint uniform small horizontal stripes or catkins. The fake crystals are often smelted with crystal enamel and glass enamel. After polishing and coloring, there is no uniform streaks or catkins.
2. Touch by hand. Even in the hot summer days, the natural crystal surface is touched by hand, and there is a cold and cool feeling. Fake crystals can easily get hot under the touch of a hand.
3. Use light. The natural crystal is placed vertically under the sun, and it can give off beautiful brilliance from any angle. Fake crystals can't.
If the reader is not sure about his own eyes. Then you can consult the professionals of the gemstone inspection.
In addition to relying on eyesight to judge, in fact, the easiest way is to use a variety of instruments in the laboratory to test a test, it is true or false to see.
1, specific hardness. Each ore has a specific hardness, and the crystal hardness is larger than that of the glass. Therefore, when the crystal is scribed, the crystal has no trace of the glass. It is more clear that the instrument for measuring hardness is used in the laboratory.
2, thermal conductivity. Adjust the thermal conductivity meter to the green 4 grid test gems. The natural crystal can rise to 2 squares in yellow. When the area is large, it rises to a yellow grid, and the fake crystal does not rise.
3. Refractive index. The natural crystal refractive index is 1.544 to 1.453. The refractive index of artificial crystal is similar to that of natural crystal, and the extinction speed is slower than natural crystal. The refractive index of glass is about 1.40, and there is no extinction phenomenon.
In addition, it is also possible to judge whether it is a natural crystal from other detection aspects such as density.
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