Identification method of Dongzhu

Identify that the East Pearl can be rubbed. After rubbing the East Pearl, there will be a rough feeling, and powder will fall off if you rub it hard. Observing the East Pearl with a magnifying glass, there will really be a clear texture inside, and the structure of the fake East Pearl is as uneven as an egg shell.

1. Friction

The natural Dongzhu would rub against each other, and there would be a rough feeling. Moreover, rubbing the Dongzhu hard would also grind down some pearl powder, and if the powder was wiped off, the Dongzhu would still show its original luster. When the fake Dongzhu was rubbed, it would have a smooth feeling, and no pearl powder could be ground.

2, magnifying glass

If you use a magnifying glass to observe the East Pearl, you can clearly see the growth lines of the natural East Pearl, and you can also see the formation state of calcium crystals. If you use a magnifying glass to observe the fake East Pearl, you will see that the structure of the fake East Pearl is as uneven as an egg shell, and the thin layer will also fall off.

3. Knife scraping

If the East Pearl was scratched on its surface with a sharp object, some powder would fall off, and a layer of skin film might be scraped off. If the fake East Pearl was scraped again, no powder would fall off, and only the smoothness of the fake East Pearl's surface.