Diamond / Agate / Ruby /Sapphire / Coral / Pearl / Crystal
 


Pearl is one of seashell, whose main ingredient is calcium carbonate. The pearl in the market now included nature and manpower. It is said in Chinese that the older the woman is, the more yellow the pearl is. Therefore, the pearl is seldom well kept. The scale of the pearl is the shape, color, polish, size etc. Generally, it is the best of ellipse, the second is in round, flat round, steamed-bread round and bubby shape. The one with delicate and smooth skin is fine.

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