Current standard number: GB/T 16552-20 17.
English name: Gems- nomenclature
Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China and National Standardization Administration of China.
Release date: 2017-10-14.
Implementation date: 20 18-05-0 1
2.GB/T16553 Appraisal of Jewelry and Jade stipulates the terms and definitions, appraisal methods, item selection and appraisal characteristics of jewelry and jade. This standard is applicable to the identification of jewelry and jade.
Current standard number: GB/T 16553-20 17.
English Name: Gem-Test
Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China and National Standardization Administration of China.
Release date: 2017-10-14.
Implementation date: 20 18-05-0 1
Extended data
Other standards related to nonmetallic minerals.
GB/T 16553-2003 jewelry and jade identification
GB/T 16553-20 10 jewelry and jade appraisal
GB/T 16553-20 17 jewelry and jade identification
GB/T 16554-2003 diamond classification
GB/T 16554-20 10 diamond classification
GB/T 16554-20 17 diamond classification
Classification of jadeite jade
Methods for determination of nacre thickness-Optical coherence chromatography
Classification of transparent jadeite (colorless) in GB/T 29 155-20 12
GB/T 307 12-20 14 Provisions on Quality Measurement Tolerance of Polished Diamond
References:
People's Network-The certificate of jewelry and jade is only true but not guaranteed.