Is natural crystal graded? I always thought that natural crystals are not graded, not like ABC, C is fake, B is dyed, C is natural, natural crystal comes from comparison, either true or false, so no level.
Natural crystals are not graded, so please be careful not to raise the price of sales because of the level of the home business.
AA level: The whole crystal is transparent inside and outside, and there is no visible artifact on the surface.
Class A: There are very fine flaws, or small natural inclusions, no more than 3 mm of cloud or floc.
Class AB: There is a slight sputum, it is easy to see the clouds or cotton wadding.
Grade B: There is a large cloud inclusion, a small ice crack, and small scratches on the surface.
Grade C: More than half of the crystal is cloud and inclusions, large ice cracks, and small cracks on the surface.
Grade D: The lowest level, the whole is cloud-like, the ice crack marks are obvious, and the surface also has obvious cracks, which seems to be broken at any time.
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