Although the gloss of the pearl is beautiful, it can not stand the test of time. Generally speaking, after decades of years, the pearl will turn into common yellow colo, losing the dazzling pearl gloss at the same time. This is as what they say, one getting old like the pearl becoming yellow.
Why the pearl accessories would become yellow after wearing a long time ? This is mainly because the physical proberty of the aragonite mineral that forms the pearl is not steady, It will turn to ordinary calcite with the passage of time. The aragonite and calcite are the same in chemical proberty, but they are very different in the crystal habit and gloss, which the reason why the color of the pearl would change.
After the pearl turns yellow, there are still some remedial measures you can take, that is put into the diluted hydrochloric acid, which can dissolve the yellow outer covering, making the pearl sparkling and crystal-clear, bright and colorful, glitter and glamour again. But if the color has been changed too badly, it will be hard to reversed.
You had better wear the pearl jewelry ater making up, because any kind of cosmetics would do harm to the pearl, including perfume and hairspray. The pearl should be digged into the fresh water, washed clean and dried after wearing before you put it away, or it would turn yellow very easily.
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