1. Inspection and inspection institutions: The qualification of quality appraisal institutions for jewelry and Tianyu is very strict, and there will be one of the words CMA, CAL, cncal, etc. On the official certificate.
2. Check the number: the certificate number, barcode or QR code will appear on the appraisal certificate. Log in to official website in its authentication center and enter the number to verify the authenticity.
3. Seal inspection: The seal on Hetian jade certificate must be steel seal, and the handwriting on the steel seal should be clear and legible.
4. Check the signature: Generally, the Hetian jade appraisal certificate will be signed by the appraiser and the checker, and the Hetian jade appraisal certificate can only take effect if both of them sign at the same time.