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. There will be a telephone number on the jewelry appraisal certificate issued. You can call the above number to inquire about the existence and authenticity of jade. If you are afraid of telephone fraud, you can learn about the authenticity of the jade appraisal certificate in combination with the website.