Three methods to identify jadeite

First, let's talk about the types of fake jade. Natural jade is called A-grade jade, inferior jade that has been acid-washed and injected with glue is called B-grade jade, and C-grade jade is ordinary jade that has been dyed.

There are three identification methods:

First: The structure of jade is a fiber interwoven structure. If the broken surface is not smooth, but very grainy

Of course, when you buy good jade, you cannot break it to see the fracture, so you can just listen to the sound. When jade and metal collide, they will make a very crisp sound. If the sound is dull, then it may be fake.

Second: UV light can be used to identify B-grade jadeite. That is, it is filled with jade. If it is filled with resin, it will fluoresce under ultraviolet light, but it is a C-grade product. Dyed jadeite cannot be identified. Please remember that natural jade will not show any effect when illuminated in a dark environment.

Third: The density of natural jade is about 3.30 to 3.36 degrees, generally 3.33 grams per cubic meter. The refractive index is 1.66.

Water cup measurement method: hang up the jade with a thin rope and then put it into the water to sink to the bottom. The jade should be completely submerged in water and its weight A should be measured. Then pick it up, without letting it sink to the bottom and without letting the jade stick out of the water, and weigh out the weight B. Divide A by B and you get the density.

This is the authoritative approach and is relatively simple, so you can do it yourself at home.

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