2. Professional jewelry appraisal certificate is a certificate that is designated by professional institutions and professionals who meet the national appraisal standards and has credibility for the authenticity and attributes of precious metals and gemstone finished materials.
3. First of all, look at whether the issuing institution is formal. The more authoritative jade appraisal certificate is NGTC/GTC/GDTC/ Jane.
4. Buy jade protection: the merchant will be required to issue an authoritative jade appraisal certificate. Certificates issued by large well-known jewelry stores are generally no problem, but jade appraisal certificates issued by small shops may be fake. Therefore, jadeite with certificate is not necessarily A goods.
5.CNACL has passed the testing organization approved by China Laboratory. Second, the test contents include the name, color, clarity, total mass, density, refractive index and other items of jewelry. These projects are very strict in the national certified jewelry and jade testing institutions. Third, look at the signature of the appraiser.
Liu Tezuo was once called "Gatsby of Asia", but it was later discovered that he was probably "Little Shenyang of Malaysia" ...
| Author: A Ye
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