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Pearls will oxidize over time, but why does the Cambridge Pearl Pendant brooch of the Queen of England always shine?
We all know that pearls will continue to oxidize and fade over time, and the luster of pearls will be dim. The Queen of England's Cambridge Pearl Pendant brooch still shines after so many years. What is the reason?

1, the quality of pearls is very good. There are many kinds of pearls, the most common ones are seawater pearls and freshwater pearls. Technically, pearls are divided into artificial pearls and natural pearls. Artificial pearls can be divided into dyed pearls and peeled pearls. Dyed pearls will fade and peeled pearls will peel off. Freshwater pearls have poor luster. Generally, wearing 10 will fade in 20 years. Seawater pearls have a good luster and fade slightly after 50 years. Moreover, the dullness of pearls has a great relationship with the thickness of nacre. Generally speaking, the thicker the nacre, the less likely it is for pearls to turn black and yellow. So I guess the Queen of England's Cambridge Pearl Pendant brooch is a natural seawater pearl, and the pearl layer on this brooch is also very thick.

2. Wear it less often. Pearl is an organic gem, which is easily eroded by sweat, so it is best not to wear it close to your body often. The Queen of England has countless jewels, and she will definitely wear different brooches often. Therefore, the wearing times of the Cambridge Pearl Pendant brooch are not many. Generally, brooches are pinned to clothes, which will not be worn close to the body and will not be easily eroded by sweat, so the luster of pearls will be preserved for a long time.

These pearls are well maintained. The British royal family will have a special person to regularly maintain and take care of the jewelry, and will clean and polish the pearls of the Cambridge Pearl Pendant brooch. When not in use, it will be put in a special room. There are certain requirements for air humidity and temperature in this room, which can better maintain pearls.