Pearl process：
1.Pearl oyster harvesting, usually after oyster 1-3 years of breeding
2、Cleaning. It is to remove mucus and impurities on the surface of pearls to prevent the loss of pearls.
3.Dry. Because too much water will cause the pearl layer to turn yellow.
4. Bleaching. During the pearl's growth process, some organic matter becomes trapped between the nacreous layer and the nucleus, or between the thin layers of the pearl. As a result, 90% of freshwater pearls are harvested from the mother-of-pearl with varying degrees of black spots and yellow tinges, severely affecting their appearance. Therefore, most pearls need bleaching before selling. Bleaching primarily utilizes oxidizing chemical reagents to destroy the organic pigments that cause discoloration inside pearls. The bleaching time will vary depending on the pearl's body color.
5. Brightening and whitening. After bleaching, most of the impurities in pearls are removed, but some chemically stable pigments require fluorescent whitening. The whitening process involves both hot and cold soaking.
6.
Polishing. It is the final step in pearl processing to increase the pearl's surface luster.
The choice of polishing speed and polishing compound ratio is crucial to the polishing quality. Currently, there is a wide variety of polishing compounds available. Crushed corn cobs mixed with paraffin wax are a commonly used polishing compound.
7. Picking. First, the machine picks the pearls, then the pearls are carefully selected, which requires an experienced worker.
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