1. It is necessary to confirm whether the appraisal institution on the appraisal certificate really exists. You can confirm the authenticity of the appraisal institution through internet search or consulting relevant industry associations.
2. There is usually a unique ID number on the ID card. The authenticity of the identification certificate number can be verified by internet search or consulting relevant identification agencies.
3. The appraisal certificate should contain detailed information about the jewelry, such as weight, color, purity, etc. The authenticity of the appraisal certificate can be verified by comparing it with the actual situation of the jewelry itself.
4. The seal on the appraisal certificate shall be the official seal of the appraisal institution. You can confirm the authenticity of the seal through online search or consulting relevant appraisal institutions.
If you still have questions, you can consult professionals in the jewelry industry, such as jewelry designers and jewelry appraisers.
6. There are many free online tools for jewelry appraisal. By uploading photos of jewelry, these tools can provide preliminary jewelry identification results.