Judge the authenticity of pearls;

The identification method feels like a pearl, cool and greasy like a pearl. Tooth biting pearls has no smooth feeling, but often has a sense of bump and sand.

Pearl-like teeth have a smooth feeling, and the coating falls off locally when biting hard. Intuitive pearls have natural colorful light, and their sizes and shapes will be different in a necklace.

Imitation pearls are mostly spherical with very uniform iridescence and luster. Smelling pearls are slightly hot and tasteless, foaming at the mouth, and the surface is foggy.

Imitation pearls taste when heated slightly, and there is moisture in the mouth. The pearl observed by magnifying observation has a texture on the surface, and the formation state of calcium crystals can be seen.