Knowledge points for identifying natural jadeite—the "cotton" of jadeite

Many people will carefully observe when buying and identifying jade to see if there are too many flaws on the jade, such as whether there are cracks on the surface, whether there is cotton inside, etc. Especially cotton, most consumers will care about it very much. So what is the “cotton” of jade? What is the significance of this "cotton" in the identification of jadeite?

Cotton will have a certain impact on the quality and color of jadeite, which is also an important reason why everyone cares about it. Most jades will have cotton! Even collection-grade glass-type jadeite, which appears to be extremely transparent, actually has cotton inside when viewed through a magnifying glass. Some merchants will say that good jade will not have cotton, but the fact is, "cotton" is a unique structure of jade, and many jades have cotton. So the question is, is jade without cotton good?

What is the cotton in jade?

"Cotton" is a common phenomenon in jade jewelry. In some jade with better water head, white inclusions in the form of clumps or fibers can be seen. They look like cotton, so people figuratively call these white inclusions in the form of clumps or fibers inside jade "cotton". The cotton in jade is a part of jade. Basically, there is cotton inside jade. In ice jade, you can see white cotton in clumpy or silky shapes.

How is the cotton in jade formed?

The cotton in jade is composed of some translucent or slightly transparent white minerals. It is said that the cotton in jade is mostly caused by the reflection of light by the grain gaps, cracks and impurity inclusions of jadeite minerals in jade, which is also called "intergranular optical effect". Another theory is that the mineral particles that make up asbestos are coarser than other surrounding mineral crystal particles, and the mineral particles that make up asbestos are not densely bonded together, which causes the asbestos in jade to be opaque.

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