It is best not to buy gold on salted fish, most of which are fake, and there is no institution to verify the authenticity. It is better to buy online in a physical store, which is more secure.

If you really buy it on it, first of all, there will be a steel seal in the gold jewelry. Steel seal is divided into two parts. One part shows the metal composition. The gold seal is pure gold. After the national unified industry standards this year, pure gold will be printed uniformly. Another part shows that the gold content of gold is generally 999, and it is not pure gold if it is below 999. For example, 750 gold is 18k gold, which is a non-ferrous gold alloy.