1, observe the light and see if there is a faint yellow tone. If there is, it is basically determined as A; If there is no white color, it is basically determined to be B or B+C (except for the green species with white background, the rubber of B goods will turn yellow after a long time). 2. For bracelets without cracks, knocking with other non-bracelet jade will make a tinkling sound, while the sound of B goods is not so crisp. You can compare it with the confirmed A bracelet. B commodity pallor principle:

Goods B are made by soaking natural jadeite raw materials in strong acid and alkali for several months, and then vacuumizing and injecting glue. This process will make the yellow iron-manganese oxides between natural jadeite particles react, so the B goods will show an unnatural white body color in the finished product. 3. By carefully observing the color of C goods, we can see that the color is cobweb-like. 4. Glossy: The feeling that white paper is not soaked in water is A goods, and the feeling that white paper is not soaked in water is B goods. 5. There is no structural difference between the places with color and those without color.

I hope I can help you.

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