How to grade pearls and pearls jewelry

Every pearl jewelry company uses different pearl grading systems. This page explains how to grade Akoya cultured pearls. We adopt cultured pearl value factor standards provided from the Gemological Institute of America (GIA). Akoya is the Japanese word for salt water. In the jewelry trade, Akoya pearls or Akoya cultured pearls are known as salt water cultured pearls. G.I.A lists seven value factors of pearls: size, shape, color, luster, surface quality, nacre quality, and matching. A Pearl's worth depends on the combination of these seven value factors. Below is a brief introduction of how to grade pearls.
You can grade pearls according to the following pearl grade factors:size,color,luster,nacre thickness,matching,surface quality and so on.
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