Under normal circumstances, as a seller, if it is not the quality problem of the jewelry itself, it will not give a return service. It also stipulates that the exchange of goods has a certain time, usually more than one week. As a seller, the goods you sell will definitely issue a quality guarantee or something, which will specify some details of jewelry, such as barcode, weight, jewelry size and so on. Your own products will also have your own brand LOGO. When recycling, it is necessary to determine whether the weight of jewelry and the size of gems conform to the real thing. If it is diamond-encrusted jewelry, you need to use some detection tools, such as a thermal conductivity meter to detect the authenticity of diamonds, as well as the certificate provided when you bought it before.