The specific methods for online inquiry of jewelry appraisal certificates are as follows:

1. Step 1, open Baidu search in the webpage, enter "National Jewelry and Jade Quality Supervision and Inspection Center" in Baidu, search official website and open it;

2. Step 2: Enter official website and click the "Inspection Certificate Query" button at the bottom of the pop-up interface.

3. Step 3: Enter the required certificate code and security code in the pop-up page, and click Query.

4. Step 4: The information of jewelry will pop up on the pop-up page.