1, network query. Now the appraisal certificate can be searched online. Most appraisal certificates generally have appraisal websites written on them. You can click on the websites above to check whether this gem exists, so as to confirm the authenticity of jadeite.

2. Telephone inquiry. Generally speaking, the telephone number will be left on the jewelry appraisal certificate issued, and you can call the above number to inquire about the existence and authenticity of jade. If you are afraid of telephone fraud, you can check with the website, and the authenticity of the jade appraisal certificate will be more clear.

3. QR code query. In addition to the code, phone number and website address, there will be a QR code on the identity certificate. If you want to know the authenticity of the authentication certificate, you can scan the QR code to see if there will be some information about the certificate and whether it is consistent with the content of the certificate.