A, B, C, D grade, how to distinguish the authenticity of jadeite

Many people who love jade say: "The reason why I dare not buy it easily is because I am afraid of buying fakes. This industry is too complicated. The real ones are valuable, but the fake ones are worthless. If you buy a fake, the financial loss is one thing, and you will also feel very upset."

Indeed, there are many fake jades with many names. The fakes are divided into B goods, C goods, B+C goods and D goods.

B-grade jade refers to jade that has been soaked in strong acid to remove impurities and then filled with glue.

Grade B jade is also called "shower" jade, and its texture is fake. After being soaked in strong acid, the dirty impurities of jade are soaked away, but at the same time the texture of the jade is completely destroyed. It does not have the toughness of jade, and it is soft and full of gaps. In order to make it invisible on the surface, transparent silicone is added to the gaps.

Therefore, B-grade jadeite looks very beautiful in color and has a very transparent texture, but its price is very low, often about one tenth of the price of A-grade jadeite of the same appearance.

The reason why many people accidentally buy B-goods is that B-goods often look good and cheap. However, B-grade jade cannot stand the test of time. Generally, after a few years, the silicone will oxidize and the jade will become unrecognizable. Some people in the jewelry industry have said that B-grade jadeite is also genuine, it just has undergone some processing. If consumers are willing to buy it, it is the consumer's choice.

B-grade jadeite is made from low-grade raw materials that are not good enough for making jewelry. It is processed by destructive means and used to impersonate high-end jadeite. Most buyers buy it thinking they are buying the real thing (A-grade). B-grade jadeite, which is used specifically to impersonate high-end genuine jadeite, cannot be said to be the real thing.

The three elements of jewelry are beauty, durability and rarity, but B-grade jadeite does not have these three elements, so B-grade jadeite is not the real thing but a fake.

C-grade jade is jade that has been artificially dyed. Color is artificially added to the originally colorless jade. Its color is fake, and it is also a fake. There are many methods of dyeing. Most of them are to heat the jade first to increase the cracks between the crystal particles, and then partially place it in the dye to allow the color to enter the jade along the cracks. The dyed colors are mostly green, purple, yellow, and red.

In professional jewelry appraisal institutes, B-grade, C-grade and B+C-grade jewelry can be easily identified. But as an ordinary layman, is there any particularly simple and easy identification method?

Objectively speaking, identifying B-grade, C-grade and B+C-grade jadeite requires years of experience. As a layman, there is no magic trick that works instantly. Someone once said that burning hair on jade could help determine whether it was real or fake. It is said that this was learned in a jewelry store at a tourist spot. This method is unscientific and has no scientific basis. Using this method for identification will cause people who buy jade to suffer losses.

A simple identification method commonly used by experts is to look at C-grade jadeite. When looking at it against the light, carefully observe the distribution of the jadeite's color. You can often see that the color is distributed along the cracks. This color distribution is unnatural and looks very much like capillaries. When you see this situation, you can conclude that the color is not naturally present in the jade, but has entered from the outside.

In addition, the dyed color has no color roots and often floats on the surface of the jade. The color is also "dead" and "dull", and lacks vitality.

When looking at B-grade jadeite, look at it under the light, turn the jadeite and find the angle where you can clearly see the reflection from the surface of the jadeite. If you look closely, you can see that the surface of the B-grade jadeite has many pits and pockmarks, which are formed when the silicone on the surface is weathered, abraded and peeled off.

In addition, the luster of B-grade jadeite is different from that of A-grade jadeite. A-grade jadeite has a dense structure and emits a glassy luster on the surface; B-grade jadeite emits luster on the surface due to the injection of glue. If it is a jade bracelet, if you tap it gently with jade or a coin, the A grade jade will sound pleasant, while the B grade jade will sound dull.

So what is D-grade jadeite? D-grade jade refers to the material that is not jade but is disguised as jade. Some are glass and have no value; some are jade or quartz which have certain value in themselves, but are counterfeited as jadeite because jadeite is more valuable. These are called D-grade jadeite.

Common imitation jadeite includes nephrite, uranium rock, serpentine, aventurine, Australian jade, Malayan jade, feldspar, Dushan jade, etc.:

1. Jasper is also a green jade, which is a type of nephrite. The color of jasper is dark green, with common evenly distributed black spots and basically no bright green. The crystals of jasper are finer, and the crystal grains are not visible. It does not have the typical "emerald quality" of jadeite, and its hardness is lower than that of jadeite.

2. The color of uranium jade is a single yellow-green with basically no color change. The color is light and uniform. It has a low hardness and is easy to wear. Its specific gravity is lower than jadeite. It is lighter on hand, has an oily luster, and does not have jadeite properties.

3. The color of aventurine is close to that of jadeite, but its crystal structure is different from that of jadeite. Jadeite has a fibrous interwoven structure, while aventurine has an equigranular structure. The green color is mostly distributed in dots, and its density is relatively low, at 2.66g/cm3, which is much lower than jadeite.

4. Australian jade, also known as Australian jade, is green chalcedony and is a cryptocrystalline quartz. The crystal particles are completely invisible to the naked eye and the color is very fresh, but it lacks the beauty of jadeite. The density is 2.64g/cm3, far lower than jadeite, and it has no jadeite properties.

5. Malayan jade is dyed quartzite, not a kind of jade produced in Malaysia as its name suggests. Its color is very rich and uniform, imitating the imperial green in jadeite, but the color distribution is very uniform and the color is fake; it has no jadeite quality and its density is lower than jadeite.

6. Dushan jade is also called Nanyang jade. Its green color often has a bluish-green hue. Under a color filter, the green turns into red, indicating that the green color of Dushan jade is not caused by chromium ions. The density of Dushan jade is also lower than that of jadeite.

The main difference between jadeite and other jades is that jadeite's hardness and density are higher than ordinary jades. Experts say that jadeite has a strong steely flavor and feels heavy in the hand. The green quality of jadeite is also an important feature that distinguishes it from other jades, but the green quality of jadeite cannot be seen because the crystal particles are very fine.

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