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First of all, there is the distinction between crystal and glass products. Crystal: There is a birefringence phenomenon, hardness is 7, and the feel is cool.
Glass products: no birefringence, hardness 5--6, warm feel. The brightness of the crystal is different at each angle, and the brightness of the glass is the same at each angle; Scratch the glass with crystal, there are scratches on the glass, and the traces can not be wiped away, and the crystal is not damaged; Scratch the crystal with glass, there are slight scratches on the crystal, but wipe it away, and the glass is damaged at the same time; In the same environment, the cold feeling of holding the crystal in your hand lasts, but the feeling of holding the glass in your hand will feel warm and the heat transfer speed is fast!
Nine ways to distinguish between real and fake crystals: (So that you are no longer afraid of buying fakes...) 1.
Seeing: When holding a crystal and looking at the sun, you can see faint evenly small horizontal stripes or catkins. The fake ones are mostly smelted with residual crystal slag and glass slag, polished and colored, and there is no uniform substance.
2.Tongue licking: Even in the hot summer, licking the surface of the crystal with your tongue gives you a cold and cool feeling; Otherwise, it's fake!
3.Illumination: Standing the crystal upright under the sun's rays, no matter from which angle, it will release a beautiful brilliance, with different brightness; Otherwise, it's a fake!
4.Hardness: Gently scratch the crystal with crushed stone, no traces will be left; (Obsidian hardness is smaller, it must be excepted, otherwise your obsidian will hurt, so it's mine, hehe) Otherwise, it's fake!
5.Check with a polarizer: turn 360 degrees under the mirror, and there are four bright and four dark changes to real crystal!
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Natural crystal is a pure natural crystal mineral, polished into jewelry to wear, which is beneficial to human health. Artificial crystal is artificially imitated by the mineral components of natural crystal crystals synthesized by artificial technology, commonly known as "glass"** higher than glass, cheaper than natural crystal. And it does not have the function of natural crystal health care. Wish.
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The main difference between artificial crystal and natural crystal is that the hardness is different, the thermal conductivity is different, and the luster is different. The hardness of artificial crystal is around, the thermal conductivity is very slow, and the texture is rough.
1. The appearance of artificial crystal and natural crystal is relatively similar in hardness, but their essential difference lies in the difference in hardness, natural crystal is a collection of a variety of minerals, and its Mohs hardness can reach about it, while the hardness of artificial crystal is about it, in comparison, artificial crystal is easy to break.
2. The thermal conductivity is different at the same time, the thermal conductivity of artificial crystal and natural crystal is also different, natural crystal is a kind of mineral crystal, which gives people a feeling of warm in winter and cool in summer, fast thermal conductivity, and more hand-feel, while artificial crystal is mostly made of glass, thermal conductivity is a little slower, and there is no feel to the touch.
3. The luster is different at the same time, the luster of the two is also different, the naturally formed crystal is relatively rare, the surface is oily or glass luster, with a high gloss, the gelatinous texture and grease are very strong, through the illumination of the light, there will be bright reflection, and the luster of the artificial crystal is not high, it looks relatively mild.
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Difference Between Crystal and Glass:
1. Color: crystal white and bright and dazzling; The glass is cyan and yellow, and the feeling is not bright enough.
2. The crystal hardness is 7, and the glass is about the same. If you use the fresh edges and corners of natural crystal crystals to carve, it is glass that can be cut.
3. Impurities: Crystal is a natural crystal, and there are often uneven and imperfect phenomena such as cotton lines (micro-cracks) in the body; The glass is the result of artificial smelting, and the body is often uniform and without cotton lines, but when carefully examined with a 10x magnifying glass, tiny bubbles can often be found.
4. In addition, if the crystal and glass are licked with the tongue, the crystal has a cool feeling, and the glass has a warm feeling.
5. Distinguish between natural crystal and synthetic crystal, natural crystal is clear and transparent, often containing bubble inclusions in the form of stars, clouds or flocculents, and microcracks are often visible. Synthetic crystals have no cracks, but they often have small bubbles (easier to spot with a 10x magnifying glass). In addition, when you weigh it by hand, you can feel that the density of synthetic crystals is greater than that of natural crystals.
1. In the process of formation, natural crystal is often affected by the environment and always contains some impurities, and when observing the sun, you can see a faint uniform fine horizontal stripe or catkins. The fake crystal jewelry is mostly smelted with residual canopy slag and glass slag, which is polished and colored, and there are no uniform stripes and catkins. >>>More
As far as I know, most of the real natural crystals, without the premise of artificial color change, just wearing, generally will not change color, in the natural crystal, pink quartz, amethyst, citrine, ametrine, these crystals, after a long time of exposure to the sun or a long time of contact with hot water, there will be a fading situation, that is, we often say that the more you wear the lighter.
In fact, it's no different, it's the price of the crystal, it's 220 a year, 88 camouflage in half a year, the attributes are no different, the crystal m4 highlights I recommend you buy camouflage, because the crystal m4 system has a gift, after completing the system task, the system will send you seven days, seven days a month, just play and the m4 camouflage is cheaper, but the attributes don't have to say that the trajectory is stable, the bullet does not float, the magazine is fast, the front sight shrinks quickly.
'83 is still a girl, a little woman.
The dichroism of natural amethyst can be seen in two ways: >>>More