Which methods of identifying jadeite are not advisable?

These identification methods are not advisable. In addition, there are many methods of identifying the authenticity of jade that are widely circulated. They sound reasonable, but in fact, either they are not very practical or the identification results are mostly inaccurate. These methods are not rigorous enough, not scientific enough, and may even cause damage to jade. Some of them are simply not advisable. Today, let’s talk about the five undesirable methods of identifying jade!

1. Water dripping observation

Method: Drop a drop of water onto the surface of the finished jade product. If it condenses into water droplets, it proves to be a Grade A jadeite. If it spreads out, it is a Grade B or C jadeite.

Practice: Ridiculous theory. If the finished jade product is sealed with wax, even if water is dripped on it, the water drops will not spread out. Whether the water droplets spread out should be related to the smoothness of the jade surface, and has no direct relationship with A-grade, B-grade, or C-grade jade.

2. Soak with boiling water

Method: When C-grade jadeite is soaked in boiling water, the color will dissolve in the water.

Practice: The colorant of dyed jade enters the jade along the cracks. When exposed to light, heat or air oxidation for a long time, the original bright color will fade. However, after being treated with sealing wax, the colorant can be kept in a safe state. Soaking in boiling water will cause a certain damage to the wax, but it will not necessarily cause the color to fade. However, natural jade may be damaged after being soaked in boiling water, so this method is not worth the cost.

3. Scrape the surface of the jade with a sharp knife

Method: During the production process of B-grade jadeite, the jadeite is soaked in strong acid, which destroys its internal structure. The structure becomes loose and cracked, so epoxy resin glue must be injected into the interior of the jadeite for filling and reinforcement. At the same time, there is a large amount of epoxy resin glue on the surface of the jadeite, so small particles can be scraped off by a sharp knife.

Practice: Epoxy resin glue is hard and corrosion-resistant, and it is almost impossible to scrape it off with a knife. If you want to scrape off the small particles, the finished jade product would be basically completely wrapped in epoxy resin glue, and the wrapping would be extremely thick, which is somewhat unimaginable.

4. Tap and listen to the sound

Method: Knock the jades against each other. If a crisp, pleasant, steel-like sound is produced, it is natural jade.

Practice: After acid washing and filling with glue, the sound of B-grade jadeite will change, becoming slightly duller. If less glue is filled, the sound will not change much. The dyed C-grade jadeite also makes a steel sound when knocked. In addition, water foam jade, diopside, etc. also make a steel sound when knocked. Whether it is a pendant or a carving, large or small, the value of the finished jade product varies. If it is knocked, it will inevitably cause hard damage such as broken edges and breakage.

5. Sour roasting method

Method: Rub concentrated acid on the back of the jadeite, then bake it with a red-hot pin, repeat this process. If you see yellow and burnt spots on the back of the jadeite, it means the jadeite is not a genuine product.

Practice: Rubbing concentrated acid on the back of jade will cause corrosion damage to the jade and should never be practiced. Jade identification is a very complex science and requires a lot of attention. All in all, the most scientific and accurate way to identify jade is to go to a professional and authoritative identification agency, so that you can have complete peace of mind.

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