Skip to product information
1 of 8

PayPal, credit cards. Download editable-PDF & invoice in 1 second!

GB 11887-2008 English PDF (GB11887-2008)

GB 11887-2008 English PDF (GB11887-2008)

Regular price $70.00 USD
Regular price Sale price $70.00 USD
Sale Sold out
Shipping calculated at checkout.
Quotation: 24-hr self-service. Click GB 11887-2008
See Chinese contents: GB 11887-2008

GB 11887-2008: Jewellery -- Fineness of precious metal alloys and designation

This Standard specifies fineness range 1) of noble metals in jewellery, mark for jewellery, test method and designation method for precious metal jewellery. This Standard is applicable to jewelleries produced and distributed in jewellery industry and at home (China).
GB/T ??11887?€?2008
GB
ICS 39.060
Y 88
NATIONAL STANDARD
OF THE PEOPLE REPUBLIC OF CHINA
P GB 11887-2008
Replacing GB 11887-2002
Jewellery - Fineness of Precious Metal Alloys
and Designation
(ISO 9202. 1991, Jewellery - Fineness of Precious Metal Alloys, MOD)
Important??Note.
This??standard??is??obsolete??and??replaced??by??GB/T??11887?€?2012
Issued on. December 31, 2008 Implemented on November 1, 2009
Jointly issued by. General Administration for Quality Supervision, Inspection and Quarantine (AQSIQ);
Standardization Administration Committee of the People's
Republic??of??China.
Table??of??Contents
Foreword ...3
Introduction ...1
1 Scope ...2
2 Normative References ...2
3 Term and Definition ...3
4 Fineness Range ...3
5 Jewellery Mark ...5
6 Determination Method ...6
7 Designation Rules ...7
Appendix A ...8
Appendix B ...9
Foreword
The provisions in chapters 4, 5 and 7 are compulsory, and the others are recommended in this Standard.
This Standard is modified in relation to ISO 9202. 1991(E) "Jewellery - Fineness of Precious Metal Alloys" (English edition). This Standard is redrafted on the base of ISO 9202. 1991; Appendix A gives the list of comparison between the provisions of this National Standard and the International Standard for ease of comparison.
This Standard adopts the International Standard by revision according to the actual conditions of jewellery production and marketing in China. The technical differences are marked with perpendicular single line on the page margin of involved articles or items. Appendix B gives the list of these technical difference and the reasons hereof for reference. This Standard replaces GB 11887-2002 "Jewellery - Fineness 0f Precious Metal Alloys and Designation". Compared with GB 11887-2002, the major differences hereof are as follows. ?€? Supplement the relevant recently-issued standards into the normative references; ?€? Add fineness scope of silver, platinum and palladium jewelleries and revise the methods for designation and marking according to the actual conditions of the jewellery production and marketing in China;
?€? Revise the requirements on nickeliferous and add the requirements in harmful elements according to "Directive (2005) (new edition) on Nickel" issued by the European Parliament and the Council of the European Union; and
?€? Add the requirements on accessories to silver, platinum and palladium jewelleries. Appendixes A and B are informative in this Standard.
This Standard was proposed by the China National Light Industry Council. This Standard is under the jurisdiction of the National Technical Committee 256 on Jewelry of Standardization Administration of China (SAC/TC 256).
Drafting organization. National Jewelry Quality Supervision and Inspection Center. Chief drafting staffs. Shen Feng, Duan Tiyu, Li Yuou, Li Suqing, and Li Wujun. All previously replaced editions hereof are as.
?€? GB/T 11887-1989, and GB 11887-2002.
Introduction
GB/T 11887-1989 "Jewellery - Fineness of Precious Metal Alloys and Designation" was firstly issued and implemented in 1989. It is the third revision to GB/T 11887-1989 "Designation Method for Fineness of Precious Metal Jewellery". GB 11887-2008 "Jewellery - Fineness of Precious Metal Alloys and Designation", an important primary standard to the jewellery industry, promotes the development of the jewellery industry in China and pays a major role in guaranteeing quality of jewellery products. The former standard was revised in order to perfect the standard and make it more operable and favourable to promote the development of the jewellery industry and regulate the jewellery market. In this revision hereof, the requirements on nickeliferous are revised and the requirements in harmful elements are added according to "Directive (2005) (new edition) on Nickel" issued by the European Parliament and the Council of the European Union; in addition, the requirements on accessories to precious metal jewellery are revised. The content revised above are implemented by two-year transition, i.e. all products relevant must be completely in conformity with the requirements of the Standard from the issuing date hereof to two years later. The specific transition period is as blow.
From the issuing date hereof to half a year later after it ?€? the production enterprise and all dealers take clearance for the products not conforming to the requirements of this Standard; From the issuing date hereof to a year later after it ?€? the production enterprise and all dealers give the deadline of the products not conforming to the requirements of this Standard; Two years after the issuing date hereof ?€? the deadline of the products not conforming to the requirements of this Standard that all dealers sell.
Jewellery - Fineness of Precious Metal Alloys and Designation
1 Scope
This Standard specifies fineness range 1) of noble metals in jewellery, mark for jewellery, test method and designation method for precious metal jewellery.
This Standard is applicable to jewelleries produced and distributed in jewellery industry and at home (China).
2 Normative??References
Provisions of the following documents, through reference in this Standard, constitute provisions of this Standard. For dated reference, subsequent amendments (excluding correction contents) to, or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of these documents is applicable. For undated references, the latest edition of the normative document is applicable to these specifications.
GB/T 9288 Gold Jewellery Alloys - Determination of Gold - Cupellation Method (Fire Assay) (GB/T 9288-2006, ISO 11426. 1997, MOD)
GB/T 16552 Gems - Nomenclature
GB/T 16553 Gems - Testing
GB/T 16554 Diamond Grading
GB/T 18781 Cultured Pearl Grading
GB/T 17832 Silver Jewellery Alloys - Determination of Silver - Volumedtric (Potentionmetric) Method Using Potassium Bromide (GB/T 17832-2008,
ISO 11427. 1993, MOD)
GB/T 19719 Jewellery - Determination of the Release of Nickel - Method of Spectrometry (GB/T 19719-2005, EN 1811. 1998, MOD)
GB/T 19720 Platinum Jewellery Alloys - Determination of Platinum and Palladium - Gravimetric Method after Precipitation of Diammonium
Hexachloroplatinate and Dimethylglyoxime (GB/T 19720-2005, ISO 11210.
1995, MOD)
5.2.1 Gold jewellery. combination of fineness thousandths (K value) and "Gold", "Au" or "G". For example. Gold 750 (18K), Au750 (Au18k), G750 (G18k).
5.2.2 Platinum jewellery. combination of "fineness thousandths" and platinum (platinum gold, white gold) or Pt. For example. platinum (platinum gold, white gold) 900, Pt900. 5.2.3 Palladium jewellery. combination of "fineness thousandths" and palladium (palladium gold) or Pd. For example. palladium (palladium gold) 950, Pd950.
5.2.4 Silver jewellery. combination of "fineness thousandths" and silver, Ag or S. For example. silver 925, Ag925, S925.
5.2.5 Where jewellery is made of precious metals with different material and/or fineness, its materials and fineness shall be denoted out respectively.
5.2.6 Where jewellery cannot be printed with marks because it is too meticulous or small, the marks containing marking content shall be accompanied.
5.3 Labeling
Product labelling shall be in Chinese language, for example, ??? 950 (platinum 950), ??? Pt950 (platinum Pt950).
6 Determination??Method
6.1 Determination for fineness of precious metal jewellery
The approved method shall be used for determining contents of precious metals; in case of any divergence, the methods specified in GB/T 9288, GB/T 17832, GB/T 19720 and GB/T 21198.6 shall be used for arbitration determination. gold content of gold jewellery, silver content of silver jewellery, platinum content of platinum jewellery, and palladium content of palladium jewellery.
6.2 Determination of harmful elements
6.2.1 The approved method shall be used for determining contents of lead, mercury, cadmium, hexavalent chrome, arsenic and so on in the tested jewellery. The determination of lead, mercury, cadmium and arsenic in jewellery may reference GB/T 21198.6, and the determination of hexavalent chrome may reference 5...

View full details