This standard specifies the terms and definitions, basic principles, marking contents and requirements of adornment mark.
This standard is applicable to precious metal ornaments, gems ornaments and imitation ornaments sold in China.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values
GB 11887 Jewelery—Fineness of precious metal alloys and designation
GB/T 16552 Gems—Nomenclature
GB/T 16554 Diamond grading
QB/T 1131 Jewellery—The provision of gold coating thickness
QB/T 1132 Jewellery—The provision of silver coatings thickness
QB/T 1689 Terms of precious metal adornment
QB/T 1690 Provisions of permissible errors for measurement of precious metals adornment mass
QB/T 2997 Adornment with precious metal coating
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB 11887, GB/T 16552 and QB/T 1689, and as follows apply.
Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Basic principles 5 Contents and requirements for hallmark 6 Contents and requirements for labels and other labels
1 Scope
This standard specifies the terms and definitions, basic principles, marking contents and requirements of adornment mark.
This standard is applicable to precious metal ornaments, gems ornaments and imitation ornaments sold in China.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values
GB 11887 Jewelery—Fineness of precious metal alloys and designation
GB/T 16552 Gems—Nomenclature
GB/T 16554 Diamond grading
QB/T 1131 Jewellery—The provision of gold coating thickness
QB/T 1132 Jewellery—The provision of silver coatings thickness
QB/T 1689 Terms of precious metal adornment
QB/T 1690 Provisions of permissible errors for measurement of precious metals adornment mass
QB/T 2997 Adornment with precious metal coating
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB 11887, GB/T 16552 and QB/T 1689, and as follows apply.
Contents of GB/T 31912-2015
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Basic principles
5 Contents and requirements for hallmark
6 Contents and requirements for labels and other labels
