Jade bracelets are of high value, so some unscrupulous traders in the market will make fake jade bracelets with chemical liquid medicine. For consumers, if they want to identify the authenticity of jade bracelets, they can adopt the following three methods:
1, to the quality inspection station for identification.
If you already have a jade bracelet and want to identify the authenticity of jade, you can go to a local identification agency for identification; If you are going to buy a jade bracelet, you must ask the merchant for an authoritative appraisal certificate when you buy it.
2, please professional identification.
Find someone else to identify the true and false, and be sure to find someone who understands the business and is trustworthy. Not every shopkeeper and salesman who sells jewelry knows it. It is generally recommended to find a shopkeeper who specializes in selling jade or a friend who knows jade. They have more contact with jade.
Step 3 identify yourself
For friends who know jade bracelets, you can identify them yourself. There are some differences between true and false jade bracelets in many aspects:
(1) Look at the color: green jade bracelets are generally colored, and the color is natural, not too bright. But the fake jade bracelet has no color roots, like floating on the surface of jade, plain and gorgeous, without aura.
(2) Looking for defects: Look at the jade bracelet with a magnifying glass or microscope. Natural jade bracelets contain a small amount of impurities, especially dirty spots and yellowish brown oxide rust color. Artificial jade bracelets generally do not appear oxidation rust color.
(3) See if there is a color boundary: there is an obvious color boundary between the green and white of natural jadeite. If it is artificial jade, there is a transition between green and white, and there is no obvious color boundary.
(4) Look at the luster: the real natural jade, whose luster is transparent glass luster, looks fresh and bright. However, the treated jadeite, especially the jadeite with acid pickling and glue injection, looks a little hazy and rubbery because of its damaged internal structure and glue injection, so it is not bright enough, and even the edge can see the rubbery feeling.
Second, what method can't be used to identify jade bracelets?
There are many ways to identify jade bracelets online, but not all of them are correct and have scientific basis. Some methods can't identify jade bracelets at all, but may damage jade. Here are some wrong identification methods for everyone to avoid being fooled:
1, drop method
There is an identification method of jade bracelets called dripping method. If the water drops on the jade bracelet are regular and round, it is a truly high-quality A-grade jade bracelet. Is there any scientific basis for this identification method? Indeed, the surface of A brand jade bracelet is very smooth after waxing, and the pulling force is enough to spread the water drops. However, the previous B brand jade bracelet is uneven, but the current B brand jade bracelet is superb in technology, and this method has basically lost its function. It can only prove that this jade bracelet is natural and cannot prove that it is of high quality.
2. Combustion method
Burning jadeite is a destructive identification method, but it is reasonable to identify jadeite by this method. When natural jadeite A is heated to 400-500℃, it will not change. Because Emerald A is sodium aluminosilicate, which is a kind of crystal with high melting point, it only begins to melt above 900℃, forming a glassy sodium aluminosilicate melt, which will not become carbonaceous. It is difficult for ordinary lamps and candles to reach such a temperature, while B jadeite becomes loose after acid treatment and must be glued to maintain its life. The chemical composition of glue is a resin composed of carbon, hydrogen and oxygen. When heated to 400℃, hydrogen and oxygen disappear, leaving only carbon, that is, carbonization. However, because the burning method is a destructive identification method, it is generally not recommended to use this method to identify jadeite, which will burn things out and it will be unclear at that time.
3. Knife engraving method
There is an appraisal method called knife carving, which uses a sharp knife to carve jade. If you scratch it lightly to see if it is real jade, this method is wrong, because many B and C grade jadeites, like real A grade jadeites, have high hardness and cannot be scraped with a knife.
4. Bubble method
There is an identification method called bubble method or boiling method. Some dyed jade bracelets can often be removed from the dye or soaked in water. This method is unreliable, and the temperature posture of boiling water can't dissolve the dye that has penetrated into the jade at all.