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How to renew the yellowing pearl jewelry which has for a long time
Although the luster of the pearls are very beautiful, but they could not be proof by the long time. In general after several decades, the pearl will become the ordinary pearl yellow, white losing its beautiful pearl luster, that is the saying goes” become old”.
Why the pearl jewelry will become yellowing after a long time? The main reason is that the
Physical nature of the mineral aragonite which is composed of pearl is instability. Over time, it will become the common calcite. The aragonite is combined with the calcite together, although the chemical composition is the same, and their crystalline form and gloss is not same. This reason of the pearl changing.
After the pearls turn yellowing, there are some remedies that are soaking with diluted hydrochloric acid, that can dissolve the shell of yellowing, and then make the pear to reproduce the crystal gorgeous, glorious charming color. However, if the color has changing too serious, it would be difficult to renew.
And for the yellow gold toggle necklaces , glass necklaces , pink ribbon necklaces , silver chain necklaces and the emerald necklaces these jewelry, they are different with the pearl jewelry, and the renew method are also very different with the pearl jewelry. Of course, some of this jewelry is not easy to become old.
The application of electroplating process
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