Why in oysters and shellfish have pearls?

Pearl beads (pearls) round, vibrant colors. Pearls can now be considered as gems!

The cradle that produces the pearl is a mollusk like a scallop, a pearl on the beach and a freshwater mussel.

There are many people who have the following idea: the bigger the oyster and shellfish the bigger the pearl inside.

The reality is not so.Only a parasite that lives on a parasite or an external object enters the body of a scallop, a boy can have a pearl.

Krill species produce a lot of pearl beads, there are about 20-30 species.

Try separating a shell or oysters to see that the innermost layer of the shell has the brightest light, twig branch colors like pearl beads, this is called the "pearl layer" , it is the pearl substance secreted by the outer membrane constitutive. When the parasite enters the shell, hard shell, to protect the outer membrane of the oyster, the boy will quickly secrete the bubble around the parasite, thus, over time, it will form. out pearl beads.

Sometimes when some grains of sand fell into the oysters, mussels made them temporarily unable to push it out, after suffering from a lot of painful stimuli, they quickly released secretions from the outer membrane. Europe to gradually encircle it.

Over time, the outside of the grain of sand was covered with very thick pearls, and also turned into a round pearl.

Krill species produce a lot of pearl beads, there are about 20-30 species. Currently, people have organized artificial pearl farming, after raising, a number of mollusks (mainly pearls), in the organization of the outer membrane soles plugged into the shell of pearls, and on covered with a small outer membrane, over a certain period of time will produce artificial pearl beads.

In coastal areas and continental lakes in China, this method is used to cultivate pearls. In addition, from cultivating ordinary pearls, it has been developed to cultivate colored and iconic pearls.

1. Video: The process of pearl formation in nature
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