1. When two pearls are rubbed lightly, they will feel rough, just like grinding their teeth, while fake pearls will feel slippery.

2. Observe whether the borehole is bright and clear, and there is pigment accumulation in the borehole of false beads.

3. Pearls have a cold feeling on their hands, but fake pearls don't.

4. When the pearl is scratched on the glass, the real pearl has pearl powder stripes, which can be written like chalk without leaving scratches on the pearl, and the fake pearl has no stripes.

5. Real pearls gently scrape pearl powder with a knife. Imitation pearls only scrape off a layer of skin.

The above method 1.4.5 is the easiest to identify the true and false.