In fact, the main reason why pearls turn yellow is because they contain unstable minerals that tend to turn into calcite over time.
If you want to restore the yellow pearl as it was, here is a quick remedy: we can use diluted hydrochloric acid to soak the yellow pearl. When choosing the cleaning agent, we must choose dilute hydrochloric acid or hydrogen peroxide.
The principle is that hydrochloric acid and hydrogen peroxide can dissolve the yellow shell of the pearl, so as to restore the original color of the pearl surface.
In addition, the time of soaking pearls should not be too long, the configuration of hydrochloric acid is about 1% to 5%, and the amount can not be too much, because too much hydrochloric acid solution corrodes the surface of pearls.
After soaking in hydrochloric acid, scrub the pearls clean with clean water.
Note, however, that this method is only suitable for pearls with a slightly yellow surface.
If the yellow is very serious, it is best to send to a special jewelry counter to clean.
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