The National Jewelry and Jade Quality Supervision and Inspection Center is a national quality inspection institution authorized by the General Administration of Quality Supervision, Inspection and Quarantine according to law, and approved by the China National Accreditation Committee for Conformity Assessment. The center is also the secretariat unit of the National Jewellery Standardization Technical Committee, presiding over the formulation and revision of national standards and industry standards.

2. Jewelry and Jade Jewelry Management Center of Ministry of Land and Resources

It is a national professional quality inspection institution for jewelry and jade authorized by AQSIQ according to law. It has passed the national metrological certification, the laboratory ISO/IEC 17025 accreditation of China National Accreditation Committee for Laboratories, and the national product quality supervision and inspection institutions. It is the authoritative organization for jewelry and jade testing in China.

Extended data

Key points of purchasing precious metal jewelry:

1. Approve the inspection results of precious metal jewelry.

Most precious metal jewelry sold in the market is equipped with appraisal certificates and certificates from quality inspection institutions. The purity and quality of precious metal jewelry are clearly marked on the appraisal certificate and certificate label (only used for jewelry settled by quality).

2. Identify the imprint of precious metal jewelry

Precious metal jewelry imprint refers to the logo printed on precious metal jewelry, which is a commitment of precious metal production and sales units to the quality of precious metal jewelry. According to the national standard GB 1 1887,

The contents of precious metal jewelry imprint should include: manufacturer code, material and purity imprint. When jewelry is made of precious metals with different materials or purities, the materials and purities should be indicated separately. When the jewelry is too fine and too small to be printed, a logo containing the imprinted content should be attached.

Baidu encyclopedia-national jewelry quality supervision and inspection center

Baidu encyclopedia-Ministry of land and resources jewellery jade jewelry management center