The bracelet is a ring ornament worn on the wrist made of gold, silver or jade. According to the structure, it can be generally divided into two types: one is a closed ring, which is made of jade material; the other is a port or a plurality of chain pieces, which are mostly made of metal materials. According to the production materials, it can be divided into gold bracelets, silver bracelets, jade bracelets, and gemstone bracelets. The bracelet is different from the bracelet, and the bracelet is generally a monolithic structure. If the bracelet is used, a plurality of small pieces can be combined into a chain to be worn around the hand. The role of the bracelet has three aspects: one is to show identity, to highlight personality; the other is to beautify the arm; the third is to protect the body. The bracelet is usually worn on the left hand, and the gemstone bracelet should be attached to the wrist. It is not jeweled and can be loosely worn on the wrist. Only pairs of bracelets can be worn at the same time.