The most comprehensive jade identification method has been compiled. With this, you will never be a jade novice again.

Experienced jade experts can tell the authenticity of jade by visual inspection, that is, "one look, two touches, three weighs".

1. Eyes are the windows to the soul. As long as you have a pair of discerning eyes, you can see 90% of jadeite!

①, Look at the "fly wings" of jadeite:

"Fly wings" are the small shiny surfaces seen on the surface of jade under the sunlight, like small wing-shaped shiny particles. This is a unique characteristic of jade, and the size of the shiny surface is related to the size of the jade particles.

For example: it is easier to see "fly wings" in bean-type jadeite, but you cannot see "fly wings" in glass-type jadeite, because the particles of glass-type jadeite are very fine and no small shiny faces can be seen on the surface. Therefore, a large number of "fly wings" can be seen on the cut surface of rough jade, but they are not easy to see on the polished surface.

"Fly wings" is one of the important signs for identifying A-grade jadeite, but it is not the only sign.

②, Look at the "orange peel effect" of jadeite:

The "orange peel effect" is that when A-grade jade is observed through reflection on the polished surface, it will have surface features similar to those of orange peel with bumps and depressions of different sizes and directions. The "orange peel effect" is only more prominent in A-grade jadeite, and the boundary between the convex and concave gradually transitions smoothly;

The ridges and valleys in B-grade jadeite are not smoothly transitioned, but are separated by a crack, like a spider web-like crack pattern. This pattern is called "acid etching network pattern", which is obviously different from the "orange peel effect".

③. Look at the glossiness of jadeite:

The identification feature of natural A-grade jade is that it has a distinct glass luster, which is like the reflection of glass surface. The luster is very bright, which is particularly prominent in high-grade jade.

However, in some inferior quality jadeite, it has a waxy luster.

④. Look at the color of the jadeite:

There are many colors of jadeite, the most valuable is green jadeite, also called "emerald green", so all kinds of artificially colored jadeite are flooding the market. The color of jadeite is natural, moist and translucent.

Dyed jade, on the other hand, lacks luster and gives people a "dry" or "water-lacking" feeling. Although the surface of the coated jade is also very smooth, it does not have the orange peel effect and has a sticky feeling.

2. Touch: Humans have highly developed touch nerves and can perceive a lot of information

Jadeite conducts and dissipates heat quickly, and will feel cool in a short time if placed on the face or the back of the hand.

Jade is also very hard, with a dense and delicate structure. After polishing, it has a very high surface smoothness and feels noticeably smooth to the touch.

3. Weigh: If you know the weight, you will feel the pressure of jade!

The density of jadeite is 3.33 g/cubic centimeter, which is higher than similar nephrite, Dushan jade, Xiuyan jade, Australian jade, Malayan jade (dyed quartzite), hard sodium jade and grape jade. But it is lower than Qinghai jadeite (grossular garnet), Tessawo stone (hydrogrossular garnet), etc.

Therefore, if you weigh an A-grade jadeite in your hand and feel it is "heavy", congratulations, it is definitely A-grade jadeite!

4. Speaking of this, I can't help but think of a density measurement method.

We all know that the density of jade is 3.33 grams/cubic centimeter. Today, I specially bring a down-to-earth identification method to jade friends, and jade friends can also identify it by themselves at home.

Prepare the materials:

1. A balance scale (with a minimum accuracy of 0.01),

2. An open beaker (a plastic cup is used instead due to the poor conditions), a thin rope,

3. Distilled water,

4. Grade A jade bracelets, Grade B or B+C jade bracelets. (PS: Grade A jade is plentiful, but it is not easy to find Grade B jade bracelets. I finally borrowed one from a jade friend who was taking medicine.)

Step 1: Pour distilled water into the beaker until the test jade is completely submerged, and place it horizontally in the middle of the balance scale, and reset the balance scale;

Step 2: Slowly place the jadeite tied with a thin wire into the beaker. Do not let it touch the wall of the beaker. If it touches the wall, the data will be inaccurate! Wait until it is completely submerged in water and the value is stable. Read the value and write it down.

Step 3: Slowly pull out the thin wire so that the experimental jade is completely placed at the bottom of the bottle, read the weight in grams, and record them separately.

Step 4: Divide the first experimental data by the second measured data to get the ratio

B-grade experimental product: 51.33/17.03=3.01(g/cm3),

A-grade experimental product: 42.75/12.82=3.33 (g/cm3)

The density of the B-grade experimental product is obviously much lower than the standard value of 3.33. This is because the internal structure is destroyed after pickling and glue injection, and the density becomes lower.

The density of the A-grade test product is within the range of the national jadeite standard. Combined with other experience, it is determined that the bracelet is "A" grade jadeite.

Statement: The conclusion drawn by this method is affected by many factors and may affect the accuracy of the experiment. It is only used as a reference. For those jade friends who are eager to know whether their treasure is A-grade but are not sure, you may try this method at home. If it is not "high B" or other goods, as long as the experimental equipment is accurate, the data measured carefully still has a theoretical basis!

5. In fact, the simplest identification method is to look for the identification certificate

Given that appraisal certificates can also be forged!

In order to avoid being cheated when purchasing jadeite, we have compiled some tips on how to identify identification certificates. I hope it will be helpful to everyone!

Check the logo on the certificate:

CMA—is the mark of qualified metrological certification of testing institutions. Institutions with this mark are legal inspection institutions.

CAL—is the mark of testing and inspection agencies approved by the national quality review. Agencies with this mark are qualified to make arbitration inspection conclusions.

CNAL—the symbol of a national laboratory.

Any of the above three marks is valid, especially the first mark CMA, which is the basic requirement of national law for testing and inspection agencies.

Network query

In the age of network informatization, jade identification institutions have also kept pace with the times. Basically, formal jade identification institutions will set up their own websites on the Internet and use the Internet to provide everyone with the authenticity of their own identification certificates.

If the jade lover has a fake appraisal certificate, there will be no information on the website. Generally speaking, the website query entrance will be in a conspicuous place, which you will see as soon as you open the website. You can query relevant information about the appraisal certificate at this entrance. If it is fake, then naturally you will not be able to find it.

Scan the QR code to identify

With the increasing number of smartphones and WeChat users, people can scan QR codes. Each QR code corresponds to a piece of content, and the QR code has a large amount of information and strong anti-counterfeiting capabilities, so there are generally very few fake QR codes.

Scan the QR code to enter the website, and all the information on the appraisal certificate will be displayed on the web page. Then you can compare the actual object with the picture to determine the authenticity of the jade.

However, not all jade identification institutions have QR code identification, so QR code query is only applicable to some institutions with QR codes.

Telephone Inquiry

Telephone inquiry is the most common and most frequently used method. Consumers only need to dial a dedicated number and someone will provide you with relevant information. This method is also the most convenient.

SMS Inquiry

Some appraisal institutions have also set up SMS inquiry methods. As long as consumers edit the appraisal number according to the method on the jade appraisal certificate and send it, an introductory SMS will be sent to the consumer to facilitate the consumer's comparative appraisal.

Check to see if there is a stamp of the appraisal unit on it

The most important point on the jade identification certificate is that there must be a steel stamp or anti-counterfeiting mark on the certificate.

Finally, I would like to point out to my fellow jade lovers several identification methods that have no scientific basis and are popular among the people.

Method 1: Get your hair tangled in jade and burn it?

Wrap your hair around the jade, then light a lighter to burn it. If it burns, it is fake or a B-grade product. If it doesn’t burn, it is real. I don't know who came up with this idea, but many people believe it.

The reason why the hair is not burned is the principle of rapid heat transfer. Jade is a conductor of heat and has a very fast thermal conductivity, so the hair is not burned. However, when the fire burns the hair to a certain ignition point, the hair will also burn.

In addition to jade, as long as the surface is smooth and the hair is tied tightly, many materials can keep the hair from being burned. The same can be done with a pen!

Method 2: Scratch the glass to find real jade!

Some merchants will tell you that jade is very hard, so it can scratch glass! However, glass is quartz, the hardness of quartz is 7, and the hardness of jade is 6.5 to 7. If this kind of head-on collision occurs, the jade itself will also suffer certain damage.

Method three: If the jadeite makes a crisp sound when knocking, it is real jade!

You can use the sound of knocking on jade to judge its authenticity, but many B-grade and C-grade jades will also make a crisp sound when knocked!

The denser the crystal grains of jade, the clearer the sound will be. The crispness of the knocking sound is not only related to the density, but also has a lot to do with the stone texture. This method cannot be used to make a one-size-fits-all judgment!

Method 4: The drip method!

If water drops on jade do not spread out, then it is A-grade jade. The principle behind this is the phenomenon of tension on the smooth surface of jade.

This method can only be used for B-grade jadeite that is relatively old. There will be acid-etched mesh and acid-etched pits on the surface. Water droplets will not form round beads when dripped on them. New B-grade jadeite will still form round beads due to waxing and other treatments!

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