Pearl is an ancient organic gemstone produced in pearl shellfish and mother-of-pearl mollusks. The calcium carbonate-containing mineral (aragonite) beads produced by endocrine function are composed of a large number of tiny aragonite crystals. Into. According to studies in geology and archaeology, pearls have been found on Earth 200 million years ago. The international gem world also listed pearls as the lucky stone of the birth of June, the memorial stone of the thirteenth anniversary and the 30th anniversary of marriage. Pearls with magnificent colors and elegant temperament symbolize health, purity, wealth and happiness, and have been loved by people since ancient times. A typhoon was named "Pearl" in 2006. Although the color of the pearl is very beautiful, it does not stand the test of time. Generally, after several decades, the pearl will become ordinary yellow, and at the same time, the beautiful pearl luster will be lost. This is what the saying goes, "the old man is yellow." More pearl knowledge, please pay more attention to China Jewelry Merchants Network. Men Swimwear Mens Briefs,Mens Swim Trunks,Mens Boxers,Board Shorts Guangzhou Jiamanqi Apparel Co.,Ltd. , https://www.pretibisous.com
Why does the pearl jewelry use yellow for a long time? This is mainly because the physical properties of the aragonite minerals that make up the pearl are unstable. Over time, it becomes an ordinary calcite. Aragonite and calcite, although their chemical composition is the same, their crystal form and luster are not the same. This is the reason for the discoloration of the pearl.
After the pearl turns yellow, there are some remedies, that is, soaking with dilute hydrochloric acid can dissolve the yellowed outer shell, and the pearl will reproduce the brilliant and radiant color. But if the color becomes very powerful, it will be difficult to reverse.
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