On the website of * * * (National Jewelry and Jade Quality Supervision and Inspection Center), I inquired about Zhou Dasheng diamond ring, but no diamond ring picture was displayed. This may be due to the following reasons:

1. Data update lag: It may take some time to update the data of the website, especially for some jewelry that has just been tested. You can try to inquire later, or directly contact the after-sales service of Zhou Dasheng Diamond Ring to get more accurate information.

2. Network problems: Sometimes, unstable network connection or browser problems may cause the website to display pictures abnormally. You can try refreshing the page, or visit the website again with another browser to see if the diamond ring picture can be displayed normally.

3. Incorrect inquiry method: When inquiring, please ensure that the information you entered is accurate, including the certificate number and brand name of the diamond ring. If you still can't find the picture of the diamond ring, we suggest that you directly contact the after-sales service of Zhou Dasheng Diamond Ring to get more accurate information.

4. Website problem: There may be a problem with the server or database of the website, resulting in some data not being displayed normally. You can try to inquire later, or directly contact the after-sales service of Zhou Dasheng Diamond Ring to get more accurate information.

During the inquiry, if you encounter any problems, you can directly contact the after-sales service of Zhou Dasheng Diamond Ring, provide your purchase information and certificate number, and they will provide you with detailed answers and help.