1. Jade bracelet appraisal certificate front: it is the issuing unit, and the testing organization can be the quality inspection station under the provincial quality supervision bureau, or the quality inspection station under the municipal quality supervision bureau. Some colleges and universities offering jewelry majors are also eligible to issue appraisal certificates.

2. Looking at the jade certificate mainly depends on the description of the jade identification elements. Such as certificate number, inspection conclusion, jadeite gram weight, size, refractive index, density, amplification inspection, etc. CertificateNo./InspectionNo.: You can check whether the purchased goods are consistent with the goods on the certificate. If there is jadeite with code, you can compare it with the code on the certificate.

3. First look at the jade appraisal institution. At present, the most authoritative assessment agency in China is NGTC directly under the Ministry of Natural Resources. Therefore, the jade inspection certificate issued by it has national authority and effectiveness.

4, the jade bracelet certificate is so true and false. First of all, look at the sign: CMA-the sign that the testing institution has the qualification of measurement certification, and the institution with this sign is a statutory inspection institution. CAL- is the symbol of inspection organization approved by national quality inspection, and the organization with this symbol is qualified to make arbitration inspection conclusion.