Cultured pearls: varieties and process of growing

Cultured pearls: varieties and process of growing

Pearls – this is one of the most beautiful minerals of animal origin. Sea Dar, which is mined and used from ancient times. At all times, pearls were considered an impersonation of purity and beauty. And the decorations made using pearls make the image of feminine and gentle.

In the XIII century, technologies appeared in China that allowed to facilitate the process of mining the gemstone. Initially, he consisted in the subtle to the mollusk of clay balls, bone fragments and even miniature figures of the Buddha. But this method gave small and uneven pearls. Nevertheless, until the XVII century, China remained the only country cultivating pearls. In the same age in Japan, the mineral on Chinese technology began to grow.

Due to differences in the source material, the pearls were quite large and smooth. Later, in the 20th century, the cultivation technology of pearls took shape finally.

Interestingly, in Russia there were also attempts to cultivate the mineral. They undertaken to engineer h. Khmelevsky. He developed the technology of growing lightweight hollow pearls.

What it is?

We will understand more about what cultivated pearls are. The process of cultivation itself involves the creation of the necessary conditions for shells and artificial stimulation of mollusk. To obtain individual types of precious stone, experts resort to such tricks as staining of the finished product, as well as fixing the stimulus in the sink in a special way to obtain the pearl of the desired form.

The first patent for the cultivation of this precious material was issued in 1869 by the Japanese researcher to. Mikimoto. But mass production began only in the XX century.

What is different from natural?

At the present time, the mining of this pearl is not conducted. In the last century, its production has been prohibited in the framework of the Mollusk population conservation program (since when the shell is disclosed, the mollusk dies).

Between the pearls of “spontaneous” origin and education grown on the farm, there are only two differences.

  1. With the focused production of pearls, the process of entering the “foreign body” into the sink is controlled by a person. In nature, this process is case.
  2. Pearls grown under the supervision of a person have the right shape and smooth surface. Of course, if these qualities are not a feature of a particular type of mineral.

    And there are some chemical and physical differences of two types of precious stones.

    1. The stone grown on the farm, when wearing, acquires the temperature close to the human body temperature. But absolutely natural stone will remain cold.
    2. Cultured pearl has greater density than the one that will be produced in the sea.
    3. Sea pearl slice has a ricking view, and the selection of cultured gems will depend on the nature of the nucleus.

      The value of pearls has always attracted the attention of fraudsters. And with the spread of cultivated beads began to fake them. But there are a number of signs that will allow to identify fake.

      1. Real stones surface is not perfect smooth and smooth.
      2. Elastic index: If the “drop” with a small height of a solid surface, then it will simply ride, while the original – “Shake”.
      3. On the scale of Moos, pearls has a density of 3-4 points. It means that it is not easy to scratch. If this happens, the scratches go to the pearl layer. If you scratch the fake, it will be damaged only by the top layer of paint.
      4. Natural pearls are very difficult to paint. Technology that involves staining beads, is built on the principle of procrastus of all Pearls layers. When exposed to such a heat bead, the color will not change. But the fake will change its color.

      Of course, these are superficial signs. Only a professional to distinguish a high-quality counterfeit from the original.

      On how to distinguish natural pearls from synthetic, see the following video.

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