How black and gold pearl was made?


How black and gold pearl was made?


We all admire beautiful black, pink, or gold pearls. And we do not always understand that this coloring is applied artificially. We do not know why a sea gold pearl from the Philippines costs about $ 1,000, and beads with similar golden river pearls are only $ 30. Or another example. The perfect pearl from Tahiti is costly. The diameter is 10 mm, and the greenish pink color is estimated at 2000 US dollars. Beads made of dyed black river pearls can cost 50-70 US dollars.

What's the difference? The fact that the sea black or golden pearl has a natural color. In other words, it is the color of the mother-of-pearl shell. The intensity of this color depends on the type of mollusk and the composition of seawater.

And river pearls dyed black is obtained chiefly artificially. Previously, they were painted with dyes.

Pearls can be colored or tinted with various dyes. Black pearls are often treated with silver nitrate to improve their color. Caution is recommended when buying cultured pearls of bright color. It is necessary to look inside the hole in the bead. If the dot is painted, the spot will be unnaturally bright, while it is worth paying attention to the thread. Any pearl that has a very uniform and intense color should be treated with suspicion. Artificial tinting of black pearls is not difficult to determine under a microscope: it is distributed unevenly in spots. On the surface of the painted pearls, minor scratches and peeling of the shells are always visible. The dye loosens the organic matter and thereby causes irreparable damage to the pearls.

Recently, such bright colors of pearls have been obtained due to irradiation with different rays. Do not think that such irradiated pearls are dangerous to health, but it is always better to check your black-dyed pearls. There are unscrupulous sellers, and you can accidentally get a small dose of radiation. But this is very unlikely.