How Pearls Form?

Formation of pearls

Because there are little grains of sand fall into the shell body, then these sand grains were wrapped up by the secretion of shell body, slowly, over many years, to a certain number of years to form a pearl.

Cultured pearl farming methods is also the use of this principle.

There are freshwater pearls and seawater pearls.

The culture method of seawater pearl is: implants the small artificial beads nuclear into shell body to stimulate the shell body to secrete secretions to wrap this little pearl nucleus up, three to five years to form a pearl.

The culture method of freshwater pearl is: implants the small meat piece into shell body to stimulate the shell body to secrete secretions to wrap the small piece of meat up, a year later to form a pearl.

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Refer to 3A-Pearl