This institution is a provincial jewelry testing institution approved by the state and authorized by Guangdong Provincial Bureau of Technical Supervision.

It is an impartial third-party gold, silver and jewelry inspection laboratory, and the reports and certificates issued by it have legal effect, and the inspection results are internationally recognized.

This institution is a provincial appraisal qualification, which can be found in official website. As long as the appraisal institution can bear the legal effect of the appraisal conclusion, it is more reliable.

If you are not at ease, you can send the identification certificate number to help you check the authenticity.

I hope the answer can help you.