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. Telephone inquiry.

2. First, open the browser commonly used on the computer. Find and search on the browser homepage, enter "Jade Query Certificate official website" and search. Find the online query and verification system of jewelry certificate in the search results, and click Enter.

3. There is generally a string of test numbers on the jade appraisal certificate, which is generally on the reverse side of the certificate. There must also be the telephone number and website address of the appraisal unit, which is generally on the front of the certificate. Call for advice, tell the test number and ask the other party to tell the appraisal result.

4. This needs to be inquired according to the website provided on the certificate. After entering its website, enter the certificate number and weight. Look carefully at the back of the appraisal certificate to see which appraisal institution issued it, whether it is Chinese characters or certificates issued by provinces and cities, because different units have different inquiry websites.

5. Log on to the Jade Certification website. Query network. Many people don't know the website of Yuzheng number. Query the network. In fact, there are many ways to know the website address. First of all, it can be searched on the web page. What you should pay attention to in online search is to find official website first, and then you can make an inquiry.