Fake black pearls are usually made by dyeing ordinary pearls. Some pearls are soaked in ammonia and then dried in the sun or in hydrogen sulfide gas, while others are treated by radiation discoloration. Usually, real black pearls are not pure black, and they are relatively large. We should pay attention to distinguish them.
Black pearls are very precious pearls. Now many bad businesses will make fake black pearls for sale for profit. These fake black pearls are often dyed with ordinary pearls.
Some fake black pearls are soaked in ammonia and then taken out to dry in the sun or reduced in hydrogen sulfide gas, so as to turn its color into black. In addition, some fake black pearls are treated by radiation discoloration.
When we buy Pearls, we must pay attention to the distinction between true and false black pearls. Usually, real black pearls are not pure black, and real black pearls are often very large. If we see very small black pearls, they may be fake.