GB/T 31912-2015 (English Version) PDF

Standard No.: GB/T 31912-2015
Language: Chinese, Available in English version
Release Date: 2015
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 31912-2015

Scope: This standard specifies the terms and definitions, basic principles, labeling content and requirements for jewelry marking. This standard applies to precious metal ornaments, jewelry and jade ornaments, and imitation ornaments sold domestically.

GB/T 31912-2015 Referenced Document

GB 11887 Jewellery.Fineness of precious metal alloys and designation
GB/T 16552 Gems—Nomenclature*， 2017-10-14 Update
GB/T 16554 Diamond grading*， 2017-10-14 Update
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
QB 1131 Jewellery-the provision of gold coatings tickness
QB 1132 Jewellery-the provision of silver coatings tickness
QB/T 1689 Precious metal jewelry terminology*， 2021-12-02 Update
QB/T 1690 Regulations on tolerances for quality measurement of precious metal jewelry*， 2021-12-02 Update
QB/T 2997 Adornment with precious metal coating