Ten common counterfeiting methods and identification methods of jadeite raw stones

Finished jade products are common to everyone, but today we will talk about jade raw stones. With the development of the jade industry, many businessmen and collectors have turned their attention to jade raw stones, and a large number of jade novices have also joined in. It is true that if you own a piece of jadeite raw stone with good quality, it does have great collection value and appreciation potential.

However, it is also very difficult to identify jadeite raw stones, so there is a saying that "one cut makes you poor, one cut makes you rich, and one cut makes you wear sackcloth" that has been passed down to this day. If you want to get involved in the raw stone industry or want to buy a raw stone for entertainment, you must first learn how to appreciate the raw stone. It is very important to master this skill, which can help you avoid being deceived and suffer less losses.

Today, the editor will look with everyone at the techniques for purchasing jadeite raw stones, and how to identify the quality of the raw stones.

A fake leather stone

This type of jadeite raw stone is the most common type. It is mainly made by crushing the weathered layer of the jadeite skin, and then sticking some quartz sand to the surface of the jadeite raw stone with glue to cover up the essence of the jadeite in order to achieve the purpose of deception. Because it is faked by skin and shell, the jade is very deceptive.

The identification method of this kind of raw stone is mainly to see whether the skin is soft and whether there is a natural arrangement of fine grains. Natural jade raw stones all have these characteristics. If they do not have these characteristics, they are most likely fake.

False color rough stone

Dyeing is a common counterfeiting operation on jadeite raw stones. The commonly used methods are color plating, blanching or burning to cover up the flaws of the original raw stone and pass off defective products as high-quality ones.

The biggest disadvantage of this method is that the color of dyed jade is displayed from the surface to the inside, and the tone is very unnatural. In addition, the dyeing process will cause burnt spots on the surface of the original stone. The difference from natural jade original stone is still very obvious. As long as you observe carefully, it is not difficult to find that this type is very easy to identify.

Three kinds of mixed color raw stones

This kind of mixed color of real and fake is not only found in raw stones, but also in finished products. By adjusting the depth and thickness of the color of the jadeite, the originally not-so-good color can become very pleasing to the eye.

This type of counterfeiting is considered very advanced, because it is a mixture of true and false, very difficult to distinguish, and extremely deceptive. The best way to identify it is to seek help from an authority, or to accumulate more experience on your own. There is no shortcut.

Four types of false stones

As the name suggests, the illusion type of raw stones will give you an illusion, usually by using methods such as inking, writing, tape or paper, smearing mud, peeling without polishing, or making small cuts in large pieces to distract consumers' attention and cover up the defects of the raw stone itself.

When you see this type of jadeite rough stone, you must not be confused by these illusions, because this type of rough stone generally has cracks, black spots, damage and other problems, and there are very few with good quality, so it is not recommended to buy it without absolute certainty.

Five mosaic patch type rough stone

This type of jadeite rough stone usually has a hole cut in it and a piece of jadeite with good color and texture is inlaid in it to deceive or cover up the inferior parts inside.

When identifying this type of rough stone, special attention should be paid to whether there are inlaid parts or openings, and careful inspection of the rough stone itself to see if there are any abnormalities or signs of bonding. This type is generally easy to detect, because natural jade rarely shows signs of adhesion, and only fake jade will show this sign.

Six-cut painted rough stone

This method of hollowing out and painting is a big project. First, use a colorless and high-quality jadeite raw stone, dig a hole from the middle to a few millimeters from the surface, apply green materials, such as green paint, and seal the opening with tin foil. This way, the features will look very similar to natural ones, including the color, which gives people the feeling of being light on the outside and dark on the inside.

Although it looks perfect, it is still fake. Although the color is very positive, if you look closely you will find that this color looks like the back of a piece of frosted glass painted green. Of course, the biggest flaw is the traces of bonding, which is the main basis for identification.

Seven skylight capping stones

It is quite common to see skylights in jadeite raw stones. Generally, it is because the overall skin looks unsatisfactory, so an attractive skylight is opened to attract people. Some people will also paste a beautiful skylight on it. This method is similar to the counterfeiting method of inlaying patches on raw stones.

This type of jade is mostly inferior quality jade. When identifying, pay attention to whether there are any signs of gluing or changes in color or sand grains in various parts. Observe the changes in color tone and gloss of various parts of the skin under the sunlight.

Eight-hole exploration and hole filling type rough stone

When you don't have a clear idea of ​​the internal situation of the original stone, drill a small hole first, and then cover the hole after understanding the internal situation of the original stone. Since the hole is so small, it is difficult to detect.

This type of rough stone is the most difficult to identify, because the covered small holes are difficult to find, and those with good craftsmanship have a chance to be exactly the same as the rough stone, which is difficult to detect.

9. Forged Weathered Stone

Fake weathering is done to make the original stone look more historical. In order to cover up the artificial traces, this fake method will bury the original stone in the soil and put corrosive substances such as acid or alkali around it to corrode it. Make the leather look closer to natural weathering.

As shown in the picture, it is generally difficult to tell the fake with the naked eye. It is almost exactly the same as the real one. If you want to identify it, you can only rely on rich experience.

10. Hollowed out transparent rough stones

The counterfeiting method of hollowing out to increase transparency is not very common because it has a high risk of counterfeiting. The principle is to increase the light transmittance and transparency of jade by hollowing out the bottom and inside of the jade.

This method is rarely used. It is generally used on finished products. It cuts jadeite of poor quality into thin slices, which will make the texture look much better. The identification of this kind of jade mainly depends on whether there are cracks on the bottom of the original stone. If the original stone has a high light transmittance and there are cracks on the bottom, you must be careful. It is basically certain that there is something wrong with this rough stone.

Having said so much, I believe everyone has seen the difficulty of identifying jadeite raw stones. The reason why it is so difficult is mainly because the jadeite raw stone has a thick skin, and it is impossible to understand the internal situation at a glance, so there will be skylights and polished edges, but these cannot fully represent the quality of the entire raw material. Therefore, when purchasing jadeite raw stone, you should study the incision and the whole piece of jade to see whether there is green, the possible direction of the green, the amount of green, the concentration and the color's positive, thick, thin, positive, the length of water and the number of cracks. Of course, you still need to watch more, learn more, and accumulate more experience.

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