How to tell whether pearls are true or false?

You can rub two pearls against each other, or you can rub them with sharp objects. If white powder is found on the pearl surface, and the pearl surface is still intact after being wiped off by hand, it is a real pearl. If it feels slippery, it is a fake pearl.

Pearls have good heat transfer performance. If you hold real pearls in your hand, you will feel cool, while fake pearls will be cool.

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