There are 16 ways to identify jadeite, but four of them are wrong. You should know them.

There are many methods for identifying jadeite. Currently, there are about 12 methods for identifying jadeite on the market, but several of them are wrong. Below we will introduce these methods one by one. Let’s see which ones are reliable:

1. Look at the glossiness of jadeite:

The identification characteristic of natural A-grade jade is that it has a distinct glass luster, which is like the reflection of the surface of glass. The luster is very bright, which is particularly prominent in high-grade jade. However, in some inferior jade, it manifests as a waxy luster.

2. 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 caused by the physical properties of jade. The coarser the particles, the more obvious the flash. That is to say, the size of the shiny surface is related to the size of the jade particles. Bean-type jade is more "wing-like" than glutinous jade, while glass-type jade has no visible "fly wings" because the particles of glass-type jade are so fine that no small shiny facets 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 one. Some other acid-washed jadeite will wash away these coarse particles, so it is difficult to see the "fly wings".

3. Look at the "orange peel effect" of jadeite:

The "orange peel effect" is when A-grade jade is observed at a certain angle on the polished surface. You will see that the polished jade surface has an uneven feature, which is the "orange peel effect". The "orange peel effect" is a normal A-grade jadeite, where the boundary between the ridges and valleys gradually and smoothly transitions; but in acid-washed B-grade jadeite, this smooth transition will be destroyed. What appears is a crack separated by a spider web-like crack pattern, which is called "acid etching network pattern", which is obviously different from the "orange peel effect".

4. Look at the color of jadeite:

Jade comes in a variety of colors. Because the most beautiful colors of jade are red and emerald, some green jades are artificially colored, and many red ones are baked on. Generally speaking, the colors of jade, whether red or green, are naturally differentiated, moist and translucent; while dyed jade lacks luster, giving people a "dry" or "water-lacking" feeling. There are also some coated jades, which also have a smooth and beautiful surface, but do not have the orange peel effect. Also lacks shine.

5. Touch:

Human touch nerves are extremely developed and can perceive a lot of information

Jade conducts and dissipates heat quickly, and will feel cool for a short period of time when placed on the face or on the back of the hand. Jade has high hardness and a dense and delicate structure. After polishing, it can have a very high surface finish and feels noticeably slippery to the touch.

6. Weigh:

Anyone who knows the weight of jade will feel the pressure!

The density of jadeite is 3.34 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 hits your hand, congratulations, it is an A-grade jadeite!

7. Density measurement method.

We all know that the density of jade is 3.33g/cm^3. We can easily measure the density of jade using some simple methods.

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, Grade B+C bracelets, several flower pieces,

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 thread into the beaker, and 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, and based on the ratio you can tell whether the jade meets the standards. Products with too big a difference are usually fakes or of poor quality.

8. Certificate of Appraisal

But what is worrying is that there are also forged appraisal certificates!

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

1 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.

In addition, it is necessary to check and confirm that there is a steel stamp or anti-counterfeiting mark on the certificate.

The above marks, especially the first mark CMA, are the basic requirements of national laws for testing and inspection agencies.

9. Check online to determine authenticity.

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 consumer gets a fake certificate, it cannot be found on the website.

10. Scan the QR code for identification.

This method is actually also a network query method, but it is faster and more convenient. You can use the QR code in WeChat to enter the website without having to enter the URL yourself. The web page will display all the information on the appraisal certificate, and then compare the actual product 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.

11. Inquiry by phone.

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.

12. SMS inquiry.

The SMS inquiry method is to send the number on the jade identification certificate to the number provided by the institution, and a corresponding SMS will be sent to the consumer. This method is also very convenient.

The following are several wrong identification methods:

Method 1: Burning hair with jade

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 which idiot 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. The thermal conductivity of jade is very fast, so the hair is not burned. However, when the fire reaches a certain ignition point, the hair will also burn off. 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: Head-on confrontation and mutual harm!

Many players believe that jade is hard enough to 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: Knock on the jade and listen to the sound!

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 dripping method, misusing the physical principles without mastering them!

If water drops on jade do not spread out, then it is A-grade jade. The principle of this is to utilize the tension phenomenon on the smooth surface of jade. This method can only be used on older B-grade products, which will have acid-etched patterns and acid-etched pits on the surface, and water droplets will not form round beads when dropped on them. New B-grade products will still form round beads due to waxing and other treatments!

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