1. Appraisal certificate: Jewelry appraisal certificate is a public trust certificate issued by professional institutions with appraisal qualifications and professionals with post qualifications on the authenticity and attributes of precious metals, gems or jewelry products.

2. Look at the exam information: the main contents to be paid attention to in the exam information are the exam number and the exam conclusion.

3. Look at the pictures in kind: The purpose of taking pictures in kind is to collect data, correspond to information and inquire about authenticity. As long as you can truly reflect the quality of jewelry and jade on the quality inspection certificate, don't ask them by the standards of wedding photography.