Standard No.:	GB/T 31912-2015
English Name:	Adornment―Mark
Chinese Name:	饰品 标识
Chinese Classification:	Y88    Artistic handicrafts
Professional Classification:	GB    National Standard
Issued by:	AQSIQ;SAC
Issued on:	2015-09-11
Implemented on:	2016-5-4
Status:	valid
Language:	English
File Format:	PDF
Word Count:	3500 words
Price(USD):	114.0
Delivery:	via email in 1 business day

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.

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