Pearl level _ pearl level A2AAA what mean


According to "cultured pearl classification national standard" A2AAA level refers to:

Shape A2 level for round: sea water pearl - diameter difference than less than or equal to 3%, fresh water pearl - diameter difference than less than or equal to 8%.



Luster grade A is extremely strong: sea water pearl - reflected light special bright, sharp, uniform, surface like A mirror, image is clear. Freshwater pearl - reflected light very bright, sharp, uniform, image is clear.

Finish level for A level too busy: macroscopic observation smooth surface, and very difficult to observe the surface has defects.

Matching degree level for A class is very good: shape, luster, smooth finish and the quality factor should be unified agreement. Color, size should be harmonious artistic or show gradual change. Hole center and straight, bright and clean and without burr.
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