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Anonymous users2024-02-121) See: In the process of formation, natural crystal is often affected by the environment and always contains some impurities.
A faint, homogeneous, fine striated or catkins-like substance is seen. The fake crystal is mostly smelted with residual crystal slag and glass slag, polished and colored, and there are no uniform stripes and catkins.
2) Tongue licking: Even on dog days in the hot summer, licking the surface of the natural crystal with your tongue gives you a cold and cool feeling. Fake crystals, there is no cooling feeling.
3) Illumination: Natural crystal is placed vertically in the sun, no matter which angle you look at, it can emit a beautiful brilliance. Fake crystals cannot.
4) Hardness: Natural crystal has high hardness, and it will not leave traces if you gently scratch it on the jewelry with crushed stone; If there are streaks, it is a fake crystal.
5) Check with a polarizer: Rotate 360 degrees under the polarizer and have four bright and four dark changes are natural crystals, and those that do not change are fake crystals.
6) Check with dichroism: natural amethyst has dichroism, and false crystal has no dichroism.
7) Check with a magnifying glass: Check with a ten-fold magnifying glass under transmitted light, and the bubbles that can be found can basically be determined as false crystals.
8) Check with a hair strand: 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.
9) Detection with thermal conductivity meter: adjust the thermal conductivity meter to 4 grids of green to test gemstones, natural crystals can rise to 2 grids of yellow, while false crystals do not rise, when the area is large, it rises to one grid of yellow.
Identification of natural and synthetic crystals.
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Anonymous users2024-02-11Crystals are quite cheap, and there are basically no fakes.
In addition, the crystals are relatively hard, glass, stone, are not broken, the counter will not be willing to put on the glass cabinet to show you.
Translucent crystals are generally better, much better than the transparent texture of glass. Of course, a lot of crystals have cotton wool or something in it, although it is not very good, but at least it can represent the real thing. You can refer to this.
You can go to Stone Ji to take a look.,Most of them are true.,It's just that most of the texture is relatively not very good.,And I personally think **It's still expensive.。
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Anonymous users2024-02-10Real crystals are: farmed and natural, crystalline. Hardness. Compare.
Glass. Big, so use. Bracelet. Target.
A corner. Scratch on the glass, and the mark is the crystal.
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Anonymous users2024-02-09The line shadow is a natural crystal, if there is no refraction phenomenon, it is still a line shadow, it is not a natural crystal. This method can distinguish between crystal and glass products, but the artificially cultivated recycled crystal will still form a double line and cannot be distinguished.
Magnetic field test method: pinch the two natural spars with the thumb, index finger and middle finger of both hands respectively, and the distance between the two is about at about two times.
centimeters, slowly rotating relative to each other and approaching each other, you can immediately feel a wonderful force similar to magnets attracting and repelling, especially the crystal sphere, which is not the case with unnatural crystals, including synthetic crystals.
Choose crystals that are not easy to imitate.
Such as hair crystal, green ghost, amethyst, there are connotations.
Natural ice cracks.
Clouds and color bands change.
Or prefer a crystal with a slight flaw.
In addition: specific gravity: the weight is too light must be fake, so that glass, plastic, pressed particles and other imitation products can be excluded, but now there are more crystals on the market, and its weight is almost the same as natural crystal, and it is not easy to find the truth or falsehood by hand test.
Refractive index: Most people like to look at crystals under the light, so they can't judge the authenticity of crystals can only look at the grade of crystals, because crystals have a high refractive index. We can put the crystal in a darker place, the color of the natural crystal will be very bright, and the color of the crystal will be relatively dull, lacking the sense of "spirit", only a slight brightness.
You can use natural white crystal and glass to compare and feel.
**: Crystal and natural gem-grade crystals have one thing in common, that is, the crystals are extremely transparent, almost completely without stone patterns, but the price is far apart. However, if he is really a natural gem grade, it must be more than 100 yuan, depending on the size of the crystal.
Chromatic aberration: Natural crystal has color aberration, and a piece of natural crystal cannot be uniform in color in every part, such as citrine, and there are very few natural citrine on the market. Natural citrine can be identified in water, natural citrine in the water its color is uneven, usually a piece of color radiation to the whole crystal is yellow, raising crystals is absolutely uniform.
Others: Cool to the touch, stone-grained crystals will basically not be fake.
Inner inclusions: There will be no fakes if there are inclusions, so you can be absolutely assured of buying crystals with connotations such as hair crystals and ghosts, because the cost of counterfeiting such things is very costly and laborious, and the effect is easy to be seen through.
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Anonymous users2024-02-08Crystal necklaces are one of the most popular gemstone jewelry in the world. It is colorful and crystal clear in the light, which can produce a special "cat's eye" phenomenon. Crystal contains trace elements such as selenium, zinc, aluminum, titanium, etc., they constantly produce photoelectric effects and electromagnetic fields, after processing and grinding, can focus on energy storage, produce brilliance, long-term wear can regulate human body functions, make people energetic, energetic.
However, fake crystals made of glass often appear on the market, and they must be carefully identified when purchasing.
1) Test hardness.
The hardness of crystal is 7 degrees, second only to three minerals such as diamond, corundum, and topaz. Crystals can be used to scratch marks on glass and metal, which is not available in counterfeit products.
2) Test the relative density (specific gravity).
The relative density of crystal is heavier than that of plexiglass (the relative density of glass, the weight of the hand, the feeling is obviously different.
3) Somatosensory.
The crystal is cold and cold to the touch, and at the same low temperature, the crystal is cold to the bone, and licking it with your tongue makes it feel even more cold and piercing; Licking glass fakes doesn't feel the same way.
4) Test high temperature stability.
The crystal melting point is 1713, which is calcined at a high temperature of more than 800 and then put into cold water and still does not burst; Glass counterfeits have no fixed melting point, and they explode immediately when heated to high temperatures and placed in water.
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).
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