How do you distinguish between true and false pearls

1. Fake pearls are generally made of two kinds of materials:

1. Made of glass balls, the surface of which is coated with a substance called "guano", which will give off luster similar to fish scales and glow like a rainbow.

2. Thick shells are round and have a luster similar to pearls.

characteristics of two kinds of fake pearls:

1. "pearls" made of glass will look very bright and have very regular shapes. If it is a necklace, each bead is very good and the size will be very consistent. If you look closely, you will find that its color is dead and will not be as unpredictable as a real pearl. If you feel it, you will feel that these "pearls" are a little greasy and not as refreshing as real pearls.

2. pearls made of shells

They are also very round, regular in shape, not too small in size, and have the luster of pearls, which can be said to be very difficult for ordinary people to distinguish. But if you look closely at its luster, you will find that all the light emitted from it is parallel stripes, no matter which angle you look at it. This is because the structure of shells is parallel, while the cross-sectional structure of pearls is concentric.

Third, identification method:

Real pearls are very natural and round in color. Its luster comes from the inside and looks crystal clear. Careful observation of its surface, we will find that its luster is layered, and sometimes there will be rings. Natural pearls generally have some tiny flaws more or less, and they are flawless, because perfect pearls are so rare.

1. With the naked eye, pearls have natural multicolored light, and their sizes and shapes will be different in a necklace.

2. Touch it with your hands to see if it is greasy or clear? Is it warm or cold? Pearl hands feel cool and cool.

3. Bite with your mouth. If you can't recognize it any more, bite with your mouth. The real pearl feels like sand, but you can't bite the glass ball.

4. when the pearl is rubbed on the glass, the real pearl has pearl powder stripes, while the fake pearl has no stripes.

5. real pearls are lightly scraped with pearl powder with a knife. Imitation pearls scrape off only a layer of skin.

6. Never believe that someone sells you very good pearls at a very cheap price. No one likes to lose money.

The following are the methods to distinguish pearls:

1. Vision: The shape of pearls is irregular, showing translucent jade white, yellow white, light blue, flesh red and other natural and unique five-color fluorescent luster; Most of the fake beads are glass imitations, with regular shape and uniform size. Generally, the surface of the beads is coated with "polishing liquid" made of silver powder or fish scales, which is monotonous in color and lacks halo.

2. Friction: When two pearls rub gently against each other, they will feel rough, while fake pearls will feel slippery.

3. drilling: observe whether the drilling is clear and clear, and there is pigment accumulation in the drilling of false beads.

4. Cold feeling: pearls feel cold when put on your hands, but fake pearls don't.

5. If the real pearls are scraped with a knife, there will be white powder!

6. Fake pearls are flawless, and the particle size is even

. The easiest way, if you have bought them, is to gently grind the beads with your teeth. {The real pearls won't cause any damage} Then the ones that feel gritty are real. If you don't buy it, you can rub it with two beads. What feels gritty is true, and what doesn't feel gritty is fake. First, visually, it looks like a carpet on the surface, like wallpaper

. Second, hold the pearl with your hands, feel the coolness, and then let it go to see if there are water drops on the surface of the pearl

. Third, bite it slightly with your teeth, and then touch the powder with your hands to see if there are traces

. Fourth, look with a magnifying glass to tell whether it is fresh water or seawater. Generally, fresh water has a regular halo. The price is generally determined by the size and roundness of the pearl, and also depends on the defects.

Sixth, to add, whether the pearl is genuine or not, you can also check whether there are any defects. If there are no defects at all, you should be careful. Of course,

There are also good pearls that are flawless but expensive.

I suggest you refer to these materials. Identifying genuine and fake pearls refers to imitations made entirely or partially by people. Therefore, it is necessary to know some simple ways to distinguish pearls from imitation pearls. Pearls are refreshing and cool, but there is no smooth feeling when biting with teeth, but there is a sense of grinding sand. If biting hard, the sound is crisp, and there is no dented tooth marks on the surface and no partial shedding of the pearl layer. There are natural mechanism lines on the surface of pearls, so we can see that the luster color is not uniform anyway. In a string of pearl necklaces, there are also some differences in their sizes, which have a natural multicolored pearl luster. At the same time, observing the pearl hole, the pearl appears sharper at the drilling hole because of its hardness. Imitation beads are slippery and wet, and smooth when bitten with teeth. When bitten hard, dented teeth marks will appear on the surface, and even the coating will fall off locally. The surface of imitation beads is slightly convex, lacking the unique pearl luster, and generally has good roundness. At the same time, because the imitation beads are soft, they will appear concave at the drilling site. When consumers buy pearl jewelry, they can not only master the necessary knowledge themselves, but also go to a jewelry store with a certain scale and good reputation run by professionals. [How to tell whether pearls are true or false? ]---------------. Pearl necklace is a high-grade ornament favored by women, which not only makes people pleasing to the eye and adds charm, but also promotes health and beauty. Hainan is a well-known pearl producing area. Many Chinese and foreign tourists who come to Qionghai are willing to buy Hainan pearls as souvenirs or gifts for friends and relatives, but they are often confused about not knowing the authenticity of pearls. In order to help tourists buy pearls with satisfactory quality and low price, this paper introduces some basic knowledge of pearls for tourists to refer to when purchasing pearls or pearl necklaces. Pearls are divided into two categories: wild pearls and cultured pearls. At present, most of the pearls sold in the market are cultured pearls. Artificial culture of pearls is to artificially insert the mature shellfish, such as white butterfly, black butterfly or Pinctada martensii, and then cultivate them in seawater for about one year, so that they can form pearl treads on the kernels in the natural ecological environment according to the biological characteristics of shellfish. Artificial farming is hard, smooth and round, and the color is sunny. People usually divide pearls into two categories: pearls and treasures. Those weighing more than 2.5 grams are called treasures, and those weighing less than 2.5 grams are called pearls. Generally speaking, the longer the culture time, the bigger the nucleus, the thicker the tread and the brighter the luster, the better. The pearls produced by white butterfly shell have the best texture, and the first-class pearls are still sparkling and radiant even if they are placed in the shadows or in the dark. Because pearls are deeply loved by people, and their value is high, some people who are confused by profit use "fishy eyes and pearls" to make profits. They take the fake seriously, shoddy it, and deceive the passing tourists. In order to avoid being deceived, tourists can identify pearls by the following simple methods. (l) Vision: The shape of the pearl is irregular, and it is translucent, jade white, yellow white, light blue, flesh red and other natural and unique colorful fluorescent luster; Most of the fake beads are glass imitations, with regular shape and uniform size. Generally, the surface of the beads is coated with "polishing liquid" made of silver powder or fish scales, which is monotonous in color and lacks halo. (2) Handfeel: Zhenzhu is very cool, even when the weather is hot, the tentacles feel very cool; Pseudo-beads feel sticky and slippery when they are tentacles. If they are pure glass imitation beads, their specific gravity is greater than that of pearls. If they are wax-filled glass imitation beads, their specific gravity is only about half that of pearls. (3) Burning: the pearl is burned on a gas lighter, and the surface is intact and the luster is still the same; Black smoke will appear on the surface of the pseudo-beads after burning, and the luster will be lost. (Source: Ocean World) Distinguishing the authenticity of pearl powder Methods Pearl powder can play the role of health care and beauty, while fake and shoddy pearl powder can not only protect health and beauty, but will endanger the health of consumers due to the excessive total number of Escherichia coli. So, how to identify its authenticity? The introduction is as follows: high-quality pure pearl powder: raw materials are high-quality freshwater pearls, which are selected and cleaned, produced according to drug quality standards, and passed the inspection. Texture: the powder is white and uniform in color, and contains no impurities. Hand feel: it feels delicate and smooth when touched, and is easy to be adsorbed on the skin. Smell: It smells like a faint fishy smell, but there is no other peculiar smell. Fake pearl powder: Fake pearl powder is generally made by heating mussel shells with alkaline water and lime, then removing the black on the surface, crushing, sieving and packaging. Texture: Take a small amount of powder with your fingers, spread it out in the sun or light and observe it carefully, and you can find that there is obvious flash. This is mica. Color: obviously whiter than pure pearl powder. This fake pearl powder is mixed with hydrolyzed animal protein powder, and mica will stick in the stomach after long-term use. Inferior pearl powder: texture: the main raw material of this powder is the powder drilled in the process of processing pearl jewelry, mixed with talcum powder. Color: yellowish, which is mainly caused by high temperature and heat when drilling. Smell: It tastes burnt or smelly when taken. Black steel needles drill holes in pearls by heating and rotating, and the fragments of black steel needles fall into the powder, which contains a large number of metal bodies. Long-term use will cause chronic poisoning. Therefore, when consumers buy pearl powder, they must go to regular big pharmacies and medicine supermarkets, look for well-known brands, and must not be deceived by greed and loss.

please accept, thank you! How to tell true pearls from false pearls

Scrape them with a knife. It is true that there is white grinding.

first, quality. That is to say, pearls have different shapes and different values. The pearl with the highest status is the refined round bead, which is suitable for all gold and silver ornaments, such as rings, earrings, pins and necklaces, because of its beautiful shape and wide use.

second, skin light. Contains the thickness of the skin and the degree of reflection. The higher the leather, the better, and the glittering one is the best. The sign that the skin is thin and smooth is that you can see the pupil of your eyes in the reflected image facing the smooth pearl.

third, color. There are white, pink, yellow, red, purple, cyan and so on. Generally, the white is slightly pink, which is commonly known as "drunken beauty"; Extremely white pearls are also precious, called "new light pearls".

fourth, the size. It is better to be the big one. As the saying goes, "seven-point pearls are eight-point treasures", that is to say, seven-point pearls are called pearls, and eight-point pearls become treasure pearls. Because strength is hard to come by, worth can be multiplied. How to tell the authenticity of pearl powder

Pearl powder is the pearl formed by bivalves such as Pinctada martensii, Hyriopsis cumingii or Cremastra plicata, etc., which is automatically taken out of the object, washed, ground and dried. 1. Packaging identification: 1. Product name, trademark, factory name, efficacy, batch number, specifications and approval number of the pharmaceutical administration department are printed on the special carton for packaging. 2. The product has instructions, which reflect the performance and efficacy of pearl powder, guide the method and dosage of medication, and the instructions are legible. 3. Loading standard: .3g ((8% 3g) (4% 6g ((3% 2) Identification: 1. This product is a white powder. Take a small amount and grind it in the palm of your hand, and smell it without any peculiar smell. The taste is light, without sweetness or bitterness. 2. Dry and loose, without caking, take a small amount on the glass plate, and press its surface in a bright place with a stick for observation. The color of the same batch is consistent, and there is no pattern or stain. 3. The powder has high fineness, and there is no graininess when grinded with fingers or tasted with tongue. Third, the identification of counterfeit products: 1. To identify the counterfeit products of pearl powder, first look at the color. If the color is inconsistent in the same batch number, it may be counterfeit. 2. Smell the smell. If there is a bad smell, fishy smell or earthy smell, it is produced by inferior pearls and should be counterfeit. 3. It is difficult to identify the pearl powder mixed with mussel shell powder, or the pearl powder is fake with mussel shell powder (called mother-of-pearl powder) by naked eyes, and you must observe it under a high-power microscope before you can identify it. < P > Buy a pearl and smash it yourself. Compared with selling pearl powder, we know everything. How to distinguish between true and false pearl powder?

method of distinguishing true pearl powder from false pearl powder

1. Smell

Real pearl powder has a faint fishy smell, which is the natural taste of pearl, not the kind that makes people sick; Generally speaking, the smell of superfine pearl powder will be heavier than that of ordinary pearl powder; The smell of nano pearl powder is heavier than that of ultra-fine pearl powder.

2. Taste

The taste of real pearl powder is slightly salty, and nano pearl powder is a bit like sugar-free milk, which tastes very mellow and comfortable, while most shell powders are a little astringent. Inferior pearl powder has sour, astringent, pungent or other peculiar smell, or has no taste. If the powder tastes burnt or burnt, and the color of the powder is yellow, it may be the residual powder of pearl drilling, and the powder is yellow due to the high-speed rotation and heating of the black steel needle. Long-term use of this pearl powder may lead to heavy metal accumulation poisoning.

3. Color

The color of real pearl powder is white-like, that is, it is close to white. The colors of pearl powder with different processes will be somewhat different, some are slightly gray, and some are slightly yellow, but they are definitely not the pale color, nor the brown color, but they should be very soft;

4. Price

Basically, no real pearl powder is sold in bags of 1 grams, 2 grams or even 4 grams, and a few dollars to dozens of dollars is a big bag. Real pearl powder is not so cheap; The production cost of high-quality pearl powder: high-quality medicinal pearl is about 1 yuan /kg, plus packaging, equipment depreciation, management expenses, logistics expenses, etc., so high-quality medicinal pearl powder must be greater than 1 yuan. Of course, it doesn't mean that what is larger than 1 yuan is high-quality pearl powder.

5. Liquidity

Fake pearl powder is made by crushing shells coarsely, which is very thick. It is quite heavy when held in your hand, and you can find the flash when you look at it under the light, and it has very good fluidity (pearl powder that is fine enough will become a block when pinched, and the thick one will spread like sand). Identification method: most of the pearl powder on the market is in bags. Try to pinch the bags when buying. If the powder quickly gets out of the way (flows) and stays away from the place where you apply pressure, then even if it is pearl powder, it is extremely thick pearl powder. If the parts you press are not so easy to spread out, or even will not spread out, but gather into a tight ball, it means that this pearl powder is very fine.

6. Relevant certification

The manufacturer of pharmaceutical pearl powder with the standard name of National Medicine should pass GMP certification, otherwise the product safety cannot be guaranteed. Manufacturers of high-quality pearl powder will be very careful about every detail of the product, such as packaging, Chinese and English characters, and even punctuation will not be wrong; The requirements of printing quality and packaging quality are very strict, and the color will not be black, overprinter will not be inaccurate, and sealing will not be incorrect. How to tell true pearls from false pearls

Real pearls will turn yellow if worn for a long time. As the saying goes, "Old pearls turn yellow", which is the truth. Fake pearls do not turn yellow.