Observation method : The growth process of natural crystal is more complicated. During the formation process, it is often affected by the environment. There are always some impurities in the crystal. When looking at the sun or under the light, you can see the faint uniform and small horizontal stripes. Or catkins. The imitation of natural crystals is often smelted with residual crystal slag and glass slag. After processing, polishing and coloring, the crystals are often accompanied by bubbles, without uniform stripes and catkins.
By feeling: cool and cool is a natural crystal paste, even in the hot summer days, touching the natural crystal with your hands or using the tongue to lick the natural crystal watch, there is a cool and refreshing feeling. Fake natural crystals have no cool feeling.
Illumination effect: Natural crystal can reflect the magnificent color in the sunlight, and the texture is moist. Fake crystals can't.
Hardness test: The natural crystal is hard, and it is lightly scratched on the ornament with gravel, leaving no traces; if there are streaks, most of them are glass crystal or plastic crystal products.
Check with polarizer: Under the polarizer, the 360 ​​degree is changed by the natural crystal, and the unchanged is the fake crystal.
Check with two colors: natural amethyst has dichroism, and fake crystal has no dichroism.
Check with a magnifying glass: Under the transmitted light with a ten-fold magnifying glass, the bubble can be found as a fake crystal.
Use the thermal conductivity meter to detect: adjust the thermal conductivity meter to the green 4 grid test gemstone, the natural crystal can rise to the yellow 2 grid, while the fake crystal does not rise, when the area is large, it rises to a yellow grid.
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