The function of the herring stone pendant is to ward off evil spirits, prevent children from being frightened, and bring good luck and fortune.

In folk customs, herring is often pickled into dried herring as a new year's gift. During the pickling process, try to take out the fish stone a week or two after adding salt, and let the salty taste in. Children should take the initiative to suck it when they feel panic. When adults feel frightened, put it under the tongue, which can often immediately stop their bad feelings.

Herring stone is a kind of bone of herring, but it is very popular among people because of its shape and color. The bigger the herring is, the larger the herring stone is and the more valuable it is. It is said that the herring stone can drive away evil spirits, prevent children from being frightened, and bring blessings and happiness, so some people call it the "fish frightened stone".

Source

Herring stone is the bones of fish, mainly a fish called snail green fish. It lives in fresh water and the largest weight can reach tens of kilograms. . Gai Yu likes to eat snails, and herring stones are the "teeth" used by this fish to crush the shells of snails. In fact, herring stone is a kind of hyperplasia of cutin, which is formed after years of accumulation and evolution. Fish such as grass carp and carp also have this stone, but it is very common in other fish, so it is more precious.