How to identify the quality of natural crystals?

Specific gravity: the weight is too light must be fake, so that glass, plastic, pressed particles and other imitations can be excluded, but now there are more crystals on the market, and its weight is almost the same as natural crystals, and it is not easy to find the true or false 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.

1 First of all, can you be sure that it is a natural crystal? There must be ice cracks and cotton wool in the natural crystal. If the beads of the whole bracelet are not specifically ice cracked, cotton wool. Then ** will be high.

2 When you are sure that it is a natural crystal. Then crystals are the same as any other gemstone. It's about clarity and size.

The less ice cracks inside the crystal, the better, and the fewer impurities, the better. That's the difference. The green, red, and blue crystals in the color are all fake. There are only four kinds of natural crystals: colorless, brown, yellow, and purple.

Simple color brightness layering is cool in a not hotter environment.

Crystals can usually be divided into two categories, one is crystals, and the other is microparticle crystals, often referred to as crystals. Generally refers to crystalline crystals, which can be roughly divided into the following types:

1) White crystal: The purest crystal is transparent white crystal, which is commonly used for jewelry.

2) Citrine: Citrine is one of the cheapest of all yellow gemstones. Among them, the slightly orange-red one, although the value is higher, is not a natural citrine, but is formed by heat treatment of poor-quality amethyst.

3) Brown citrine: often known as citrine, generally used to make glasses. Its color can be dark and light.

4) Amethyst: The value is higher than that of ordinary crystals. Good quality amethyst is mostly cut into round, square and long facets.

When identifying the quality of crystal, it mainly depends on whether the color is good, whether the color is uniform, and whether there are impurities in the stone.

1. Don't be greedy for cheap, remember the age-old saying that cheap is not good; The value of the crystal is differentiated according to different grades, the low-grade goods are naturally surprisingly cheap, and the high-grade ones can be used as the main stone to be inlaid high on the king's crown!

2. Don't have a fluke mentality, dream of buying good products at a low price; Although crystals are counted as semi-precious stones, it does not mean that it has no value. Now the common ones on the market can basically only belong to the low-end or even low-grade products, although they are also according to the weight, but the wholesale ones are really cheap, so even if they are retail, they still have a certain profit margin if they are as low as a few yuan.

3. 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 is mostly smelted with residual crystal slag and glass slag, polished and colored, and there are no uniform stripes and catkins.

4. 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.

5. Natural crystal is placed vertically in the sun, no matter which angle you look at, it can emit beautiful brilliance. Fake crystals cannot.

6. Hardness: The hardness of natural crystal is large, and it will not leave traces if it is lightly scratched on the jewelry with gravel; If there are streaks, it is a fake crystal.

7. 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.

8. If the crystal is placed 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.

There are several types of crystals.

The color of true natural citrine is usually orange yellow (also called Brazilian yellow, more common and cheaper), tea yellow (also called general yellow, precious and rare). Brazilian citrine has obvious color bands or color clusters, you can find a piece of white paper or white cloth under the crystal when you buy to observe, the color bands and color clusters are random and irregular, the hue has shades of variation, and the boundaries are gradual.

Green ghosts and hair crystals are usually not fakes because of their complex causes.

It doesn't matter if the bracelet you buy is round, square or shaped, there must always be an eye on the bracelet (for stringing), so let's start here. Holding the bracelet in your hand, carefully separate the two beads, and take a closer look at the drilled holes on it. You must know that the eyes (holes) on the beads of all crystal bracelets are manually drilled by semi-automatic equipment, and as long as the drill bit is definitely a large end and a small end, so the holes at both ends of a bead should also be drilled - one end hole is large and the other end hole is small.

Of course, it is not excluded that there is now a two-end drilling process, even so, we will find that there will be small cracks and flaws on it when we observe carefully, which is formed when drilling, and any master can not avoid this phenomenon with the current process. If the beads on your hand are drilled neatly and you can't see a single crack or blemish, it proves that it is from the assembly line, and the probability of glass is greater than 99%.

That's all, there's a lot of information on it.

Three points teach you to distinguish, artificial crystal and natural crystal.

Look at the cracks, the gas-liquid, the ice, the inclusions, and the color.

Naturally, it will be very cool.

See: natural crystal in the formation process, often affected by the environment will always have some impurities, when observing the sun, you can see a faint uniform fine horizontal stripe or catkins substance. The fake crystal is mostly smelted with residual crystal slag and glass slag, polished and colored, and there are no uniform stripes and catkins.

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.

Illumination: Natural crystals are placed vertically in the sun, giving off a beautiful brilliance no matter which angle you look at it. Fake crystals cannot.

Hardness: Natural crystal has high hardness, and it will not leave traces if you gently scratch it on the jewelry with a broken stone; If there are streaks, it is a fake crystal.

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.

Check with dichroism: natural amethyst has dichroism, false crystals do not have dichroism.

Check with a magnifying glass: If you check with a 10x magnifying glass under transmitted light, you can basically find bubbles as false crystals.

Hair inspection: If the crystal is placed 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.

Detection with thermal conductivity meter: Adjust the thermal conductivity meter to 4 grids of green to test gemstones, natural crystals can rise to two squares of yellow, while false crystals do not rise, when the area is large, it rises to one grid of yellow.

The easiest thing is to look.

One is to see if there are any bubbles.

The second is to see if the weight is worse, and the crystal is heavier.

Three look at the texture, the crystal is harder!!

The safest thing is to look at the crystal structure with a magnifying glass.

Or just look at the crystal nucleus inside when the light is transparent.