There are not many mother shells suitable for cultivating seawater pearls, including white butterflies, black butterflies, penguins, abalone and so on. White butterflies produce white pearls, while black butterflies produce the rarest black pearls.
Black pearl has become one of the most fashionable decorative jewels in the world because of its dark, bright and dazzling appearance. Due to the scarcity and high value, the value is several times higher than that of ordinary pearls.
You can also identify the authenticity of pearls by the following methods:
The first trick: friction method
Rub two pearls with a little force, and real pearls will feel rough and sandy; And there will be pearl powder. After the pearl powder is wiped off by hand, the surface of the pearl will be smooth again. Those that slip each other and have no pearl powder are fake pearls.
The second measure: observation
Suitable for jewelry made of many pearls. Observe the shape and luster of pearls carefully. Real pearls have a natural rainbow color. In a necklace, the size, shape and luster of each pearl will be slightly different, because pearls are natural products, and it is impossible to make every pearl absolutely the same as fake pearls cast by machine molds. Fake pearls are mostly round in shape, with uniform iridescence and luster, so they look fake.
The third measure: amplification method
Take a magnifying glass before buying pearls. Don't think it silly to buy jewelry with a magnifying glass, because if you buy fake pearls, you will feel even more stupid! Observing the pearl surface with a magnifying glass of ten times, we can see that the sand dune-like shape blown by the wind is a real pearl, because the pearl is made up of scaly nacreous layers, and obvious flaky coverage can be seen under the magnifying glass; The fake pearl skin is as uneven as the egg surface.
Through the above three methods, we can basically identify the authenticity of pearls.