How to distinguish between B-grade and C-grade jadeite

With the development of society, the price of jade is getting higher and higher, and the methods of counterfeiting jade are becoming more and more sophisticated. In the previous article, Xiao Chuang and everyone learned how to identify B-grade jadeite. Now let’s take a look at how to identify C-grade jadeite.

C-grade jade refers to a type of jade that has been artificially dyed. Its color is not long-lasting and will gradually fade after one or two years of wearing. If it is exposed to sunlight for a long time, it will fade faster.

It is completely artificially colored, the color is not correct, it looks evil, and upon closer observation, its color does not exist naturally inside the jadeite, but is filled in the cracks of the minerals, showing a network distribution, and does not have the unique color roots of jadeite. When observed through a Charles filter, green turns red or colorless. By wiping with a strong eraser, the surface color can be removed or turned brown. Because of the injection of dyes, long-term wearing is not good for health.

C-grade jadeite will turn light red, pink, or brownish red under the Charles color filter. This color change is quite obvious and relatively easy to judge, but as counterfeiting technology becomes more and more sophisticated, some fake jade does not change color under a color filter, which makes it more difficult to identify and more deceptive.

When you see C-grade jadeite for the first time, you will feel that it is unnatural and its color is exaggerated and impure. The color of C-grade jadeite is uneven. Its surface color is relatively thick and bright, but becomes lighter as you go deeper into the jade. In the rough areas of the jade piece, the color deepens and accumulates in the micro gaps.

If you look closely under the light or a microscope, you can see that its color is distributed in a network or in clumps. Some of it is accumulated in the micro gaps of jadeite, and some is attached to the surface of the jadeite mineral, but is not distributed inside the jadeite crystal.

Players should note that C-grade jadeite has no collection value, and the harmful substances caused by its dyeing can also affect human health, so everyone must remember not to be deceived during the purchasing process.

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