How to see the jade identification certificate

How to see the jade identification certificate

First, look at the inspection agency. The state has strict qualifications for the quality certification of jewelry and jade. Only by passing the certification, the issued certificate is valid. The nationally certified jewellery and jade quality supervision and inspection center is a national-level jewellery and jade professional quality inspection institution authorized by the State Bureau of Quality and Technical Supervision. It is the authoritative organization for domestic jewellery and jade detection and has legal effect. The jewellery and jade identification certificate issued by it has the CMA typeface (the mark of the National Quality and Technical Supervision Bureau for measurement certification), or CAL, CNACL, one of these letters is valid, especially the first mark CMA, which is the national legal Required certification mark. The purchase of a jewelry identification certificate with a CMA mark by a consumer proves to a large extent the authority of the identification certificate used by the merchant and the guarantee of product quality.

1. "CMA" is a metrological certification and accreditation body composed of countries or provinces.

2. "CAL" nationally recognized testing organization.

3. "CNACL" has passed the inspection organization approved by the Chinese laboratory.

Second, look at the test content. Including jewelry name, color, clarity, total quality, density, refractive index and other projects, in the national certification of jewelry and jade testing institutions, these items are very strict.

Third, look at the signature of the appraiser. The certificate of authentication needs to be signed and confirmed by two appraisers to be valid. One is the appraiser and the other is the reviewer.

Fourth, look at the seal. Strict should be a stamp, and the above font can be clearly identified.

Fifth, look at the number. The number of this certificate on the back of the certificate must be the same as the number on the back of the object.

Sixth, some certificates have website inquiries or can be queried by SMS.

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