1. The qualification of this institution must be printed on the certificate.
There are five kinds of institutional qualification certification: CAL certification, CMA certification, CNAL certification, CNAS certification and ILAC-MRA certification.
2. The contact information of the institution must be printed on the certificate.
The certificate must be signed by the inspector
4. The evaluation content on the certificate is comprehensive and detailed:
Diamond grading certificate:
What we should pay most attention to is the 4C grade of diamonds: color grade, clarity grade, cut grade and weight. Of course, not all diamonds have 4C standards. Gia's standard is that diamonds weighing more than 0.3 carats can be issued with diamond classification certificates.
Precious metal jewelry purity inspection certificate:
The most important thing to pay attention to is the kind and content of precious metals.
Jewelry Jade Jade Appraisal Certificate:
The test conclusion is the most important.