GZTC

Unlock jewelry passwords with technology

Our center has multiple nationally registered appraisers, senior engineers, and experienced experts in rock and mineral identification.

Our center is a nationally recognized laboratory, equipped with various large-scale testing equipment and conventional auxiliary equipment according to the requirements of the testing project, which can fully meet the needs of the testing work. The testing environment is excellent, the structure of the testing personnel is reasonable, and most of the personnel in the testing position have obtained the qualification certificate of jewelry appraiser. We are a testing unit with a sound management system.

Our Advantages

Get your items tested by us

Technological hard power

Equipped with high-precision spectrometers, microscopic imaging systems, and AI intelligent detection equipment, it can analyze the microstructure, spectral characteristics, and elemental composition of jewelry, ensuring zero data error;
Authority and credibility

Obtained National Metrology Unit Certification (CMA), National Laboratory Certification (CNAS), and international industry qualifications. The testing report is universally applicable nationwide, providing endorsement for the assetization and financialization of jewelry
Full chain service capability

From routine testing to personalized appraisal, we support jewelry traceability, historical archive reconstruction, and digital evidence preservation to meet the diverse needs of collectors, brand owners, and judicial institutions

Gemstone and precious metal Testing

Support the identification of jadeite, nephrite (Hotan Jade), opal, chalcedony (agate), serpentine (Xiuyu), Dushan Jade, turquoise, lapis lazuli, malachite, Qingtian Stone, Shoushan Stone, etc; Non destructive testing of precious metal jewelry materials and raw materials, composition and content testing of gold, platinum, silver, etc.

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