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How artificial and natural pearls created

How artificial and natural pearls created?

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Pearls are made from small strange particles which deposit between shell and mantle of oyster. These particles trigger a defense procedure by organism and they are slowly covered by the calcium carbonate layers secreted by oyster thus giving birth to the pearls.

In artificial production of the pearls a small fragment of the shell covered with the mantle pieces is inserted between shell and mantle of an oyster and a pearl is formed around graft.

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