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

Orange peel texture is the sign of A-grade jadeite, but acid-washing texture is the sign of B-grade or B+C-grade jadeite.

The appearance of orange peel texture is just like its name. It refers to the fact that when jade is observed under a magnifying glass and the illumination of reflected light, there are textures similar to orange peel. This is an uneven manifestation of the way different jadeite particles are combined in different understanding surfaces. However, this does not mean that all A-grade jade can have orange peel texture. The larger the crystal grains of jade, the more obvious the orange peel texture will be (such as bean-type jade). However, in the case of ice jade and glass jade, which have tiny particles that are even crushed into a paste, it is difficult to see the orange peel texture. Therefore, orange peel texture is not a sign of natural jade and can only be used as an auxiliary judgment.

Orange peel is clearly visible:

The pickling pattern is one of the basic criteria for judging B goods and B+C goods.

Because jade is corroded by strong acid, its internal structure will change, leaving traces of erosion and a loose structure. If you observe carefully, you will find irregular bubbles on the surface and a spider-web-like structure inside.

Obvious spider web structure:

Clearly spider web-like structure

Irregular bubbles

Irregular bubbles

Friends, please pay attention, in natural A-grade jade, you can only see orange peel texture, but no acid-washing texture. The overall feel of the orange peel texture is smooth, round and flowing. In B-grade jade and B+C jade, the orange peel texture is not obvious or cannot be seen, but traces of acid-washing texture do exist, and the stronger the erosion, the more obvious the acid-washing texture.

In addition, friends need to be careful not to confuse the cotton-like structure and acid-washing marks in natural A-grade jade. Although they look similar on the surface, careful observation reveals that this cotton-like structure is not a spider web structure.

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