How to identify natural crystals? How to distinguish the real from the fake with natural crystal?

To add that, crystals have birefringence because they have a regular lattice structure and are anisotropic to light internally. However, glass is an amorphous structure and does not occur birefringence, so the identification of birefringence can only indicate that the material is not a glass product, but not that it must be crystal (or other cheap ore).

1. Light: The natural crystal is placed vertically in the sun, no matter which angle you look at, it can release a magnificent color. Fake crystals cannot.

2. Search with dicolor: natural amethyst has dichroism, and fake crystal has no dichroism.

3. Search with a magnifying glass: Search under the transmitted light with a ten-fold magnifying glass, and you can find that the foundation of the bubble can be determined as a fake crystal.

4. Tongue licking: Even on dog days in the hot summer, licking the natural crystal appearance with your tongue also has a cold and cool feeling. Fake crystals, there is no feeling of coolness.

5. Hardness: The hardness of natural crystal is large, and it will not leave traces of decay on the jewelry with crushed stone; If there are streaks, it is a fake crystal.

6. Search with a polarizer: 360 degrees under the polarizer is a natural crystal, and there is no change in the fake crystal.

7. See: In the process of formation, natural crystal always contains some impurities when affected by the situation, and when investigating against the sun, you can see a faint uniform and tiny horizontal stripe or catkins. The fake crystal is mostly smelted with crystal slag and glass slag, polished and colored, and there are no uniform stripes and catkins.

8. Detection with thermal conductivity meter: adjust the thermal conductivity meter to 4 green grids to test gemstones, natural crystals can rise to 2 grids of yellow, while false crystals do not rise, and rise to yellow grids when the area is large.

9. Search with hair: put the crystal on a hair strand, and the human eye can see the double shadow of the hair through the crystal, it is a natural crystal, mainly because the crystal has birefringence.

Answer: To distinguish the true and false crystals, you can look inside, put the crystal in the sunlight for observation, the real crystal will have evenly distributed horizontal stripes inside, the refraction of the real crystal is also obvious, and there are obvious changes in light and darkness under the polarizer. Fake crystals not only have poor heat transfer and are not cold enough to the touch, but also do not have refraction, and the hair will not be refracted when placed underneath. 1. Look at the inside of the crystal under the sun for observation, the real crystal will have evenly distributed fine horizontal stripes or catkins, while the inside of the fake crystal is mostly crystal slag and glass slag.

2. Test the temperature of the natural crystal is cool and cool, compared with the fake crystal will be much cooler, so you can put 2 crystals in your hand to feel it, after touching, the crystal that feels cold is the real crystal. 3. Look at the refraction and put the crystal under the polarizer for observation, the real crystal will show light and dark changes, you can also put the hair under the crystal to observe, if you can see the double shadow of the hair through the crystal, it proves to be true. 4. Listen to the sound and gently tap the crystal with your fingers or other objects, the real crystal sound is crisp and has a metallic sound, while the fake crystal sound is very dull.