Pearl outgrowth of nacre, which arose under special conditions

The outer layer of the skin of the mollusc allocates nacre, which is deposited on the inner surface of the shell. If the sink gets a grain of sand or some inedible insect, they can stay there. Over time, around the foreign body, such as around the nucleus, begin to grow layers of a future Pearl. And, the longer is the pearl shell, the more it becomes. Find a pearl that has no place in a mollusk shell and pearl lost its pearl. In China, already in the 13 th century tried to withdraw artificial pearls. In the 18 century were known experiments of Linnaeus, who introduced various foreign bodies in the living mollusc shells. In China, and to date in the spring of collecting shells, they put various small articles made of bone, wood or metal and drop clams back into the water. After several years of catch basin and take out of them already finished pearl. But this low-quality pearls. Japanese researcher Kopihi Mikimoto early in this century set out to grow artificial pearls, which is the same quality as would be natural. In 1913, he managed to get the first such gem. Since then, Mikimoto has become the company to expand rapidly. In 1938, at Mikimoto employs 500 people. The Company now has been a process of growing shellfish themselves. When they grew up in the sink put balls of artificial nacre. Mikimoto was the first who taught the modern man to enjoy a living organism, so that with his help to raise the stone.