GB 11887-2012_English: PDF (GB11887-2012)
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Jewellery -- Fineness of precious metal alloys and designation [including MODIFICATION 1]
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GB 11887-2012
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| GB 11887-2008 | English | 70 |
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Jewellery -- Fineness of precious metal alloys and designation
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GB 11887-2008
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| GB 11887-2002 | English | 279 |
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Jewellery -- Fineness of precious metal alloys and designation (eqv ISO 9202: 1991 Jewellery -- Fineness of precious metal alloys)
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GB 11887-2002
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| GB/T 11887-2000 | English | 239 |
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Water quality--Determination of aniline compounds--Spectrophotometric method with N- (1-naphthyl) ethylenediamine
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GB/T 11887-2000
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| GB/T 11887-1989 | English | RFQ |
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Jewellery--Fineness of precious metal alloys and designation
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GB/T 11887-1989
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| Standard ID | GB 11887-2012 (GB11887-2012) | | Description (Translated English) | Jewellery - Fineness of precious metal alloys and designation [including MODIFICATION 1] | | Sector / Industry | National Standard | | Classification of Chinese Standard | Y88 | | Classification of International Standard | 39.060 | | Word Count Estimation | 8,832 | | Older Standard (superseded by this standard) | GB 11887-2008 | | Quoted Standard | GB/T 9288; GB/T 16552; GB/T 16553; GB/T 16554; GB/T 17832; GB/T 18781; GB/T 19720; GB/T 21198.6; GB/T 23885; GB 28480; QB/T 1689 | | Adopted Standard | ISO 9202-1991, MOD | | Drafting Organization | National Jewelry Quality Supervision and Inspection Center | | Administrative Organization | National Standardization Technical Committee jewelry | | Regulation (derived from) | National Standards Bulletin No. 28 of 2012 | | Proposing organization | China Light Industry Association | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This Chinese standard specifies the scope of the purity of precious metal jewelry, stamp, measuring methods and precious metal jewelry naming method. This standard applies to the jewelry industry and domestic production and sale of precious metal jewelry. | | Standard ID | GB 11887-2008 (GB11887-2008) | | Description (Translated English) | Jewellery - Fineness of precious metal alloys and designation | | Sector / Industry | National Standard | | Classification of Chinese Standard | Y88 | | Classification of International Standard | 39.060 | | Word Count Estimation | 9,941 | | Date of Issue | 2008-12-31 | | Date of Implementation | 2009-11-01 | | Older Standard (superseded by this standard) | GB 11887-2002 | | Quoted Standard | GB/T 9288; GB/T 16552; GB/T 16553; GB/T 16554; GB/T 18781; GB/T 17832; GB/T 19719; GB/T 19720; GB/T 21198.6; QB/T 1689; SN/T 2004.3-2005 | | Adopted Standard | ISO 9202-1991, MOD | | Drafting Organization | National Jewelry Quality Supervision and Inspection Center | | Administrative Organization | National Standardization Technical Committee jewelry | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 23 of 2008 (Total No. 136)National Standards Bulletin No. 28 of 2012 | | Proposing organization | China Light Industry Federation | | Issuing agency(ies) | Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China | | Summary | This Chinese standard specifies the scope of the purity of precious metal jewelry, jewelry product identification, measurement methods and precious metal jewelry naming method. This standard applies to the jewelry industry and domestic production and sales of jewelry. | | Standard ID | GB 11887-2002 (GB11887-2002) | | Description (Translated English) | Jewellery--Fineness of precious metal alloys and designation (eqv ISO 9202: 1991 Jewellery--Fineness of precious metal alloys) | | Sector / Industry | National Standard | | Classification of Chinese Standard | Y88 | | Classification of International Standard | 39.06 | | Word Count Estimation | 7,779 | | Date of Issue | 2002/3/5 | | Date of Implementation | 2002/9/1 | | Older Standard (superseded by this standard) | GB/T 11887-2000 | | Quoted Standard | GB/T 9288; GB/T 11886; GB/T 16552; GB/T 16553; GB/T 16554; QB/T 1656; QB/T 1689 | | Adopted Standard | ISO 9202-1991, NEQ | | Regulation (derived from) | Announcement of Newly Approved National Standards 2008 No. 23 (No. 136 overall) | | Proposing organization | China Light Industry Federation | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China |
GB/T 11887-2012
GB
NATIONAL STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 39. 060
Y 88
Replacing GB/T 11887-2008
Jewellery –
Fineness of Precious Metal Alloys and Designation
(ISO 9202.1991, Jewellery - Fineness of Precious Metal Alloys, MOD)
ISSUED ON. NOVEMBER 5, 2012
IMPLEMENTED ON. MAY 1, 2013
Issued by. General Administration of Quality Supervision, Inspection
and Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References... 5
3 Terms and Definitions ... 6
4 Fineness Range ... 6
5 Marks of Jewellery Products ... 7
6 Determination Method ... 8
7 Designation Rules ... 8
Appendix A (Informative) Comparison of Chapters and Articles’ Numbers
between This Standard and ISO 9202.1991 ... 9
Appendix B (Informative) Technical Differences between This Standard and
ISO 9202.1991, and Reasons ... 10
No.1 Amendment of GB 11887-2012 ... 11
Foreword
Chapters 4, 5 and 7 of this Standard are compulsory. The rest are
recommendatory.
This Standard is drafted in accordance with GB/T 1.1-2009.
This Standard replaces GB 11887-2008 "Jewellery — Fineness of Precious Metal
Alloys and Designation". Compared with GB 11887-2008, the main differences are as
follows.
— Introduction is deleted (Introduction of 2008 edition);
— Amend the relevant recently-issued standards into the normative references
(see Chapter 2);
— Delete the specific requirements on harmful elements. It is revised as “shall
meet the requirements of GB 28480” (see 4.3 of this edition, 4.3 of 2008
edition);
— Delete the relevant contents of determination of harmful elements (see 6.2 of
2008 edition).
Using re-drafting method, this Standard modifies and adopts ISO 9202.1991(E)
"Jewellery — Fineness of Precious Metal Alloys".
Compared with ISO 9202.1991, this Standard adjusts the structure significantly.
Appendix A lists out the article-section comparison between this Standard and ISO
9202.1991.
There are technical differences between ISO 9202.1991 and this Standard. The
technical differences are marked with vertical single line on the page margin of the
involved articles. Appendix B gives the list of these technical difference and their
reasons.
This Standard was proposed by the China National Light Industry Council.
This Standard shall be under the jurisdiction of the National Technical Committee on
Jewellery of Standardization Administration of China (SAC/TC 256).
Drafting organization of this Standard. National Jewellery Quality Supervision and
Inspection Centre.
Chief drafting staffs of this Standard. Duan Tiyu, Li Suqing, Wang Chunsheng, Li
Yukun, and Li Wujun.
The previous editions replaced by this Standard are as follows.
Jewellery –
Fineness of Precious Metal Alloys and Designation
1 Scope
This Standard specifies the precious metals’ fineness range1), mark, test method, and
the designation method of precious metal jewellery.
This Standard is applicable to jewellery industry and the precious metal jewelleries
that are produced and marketed in domestic market. For precious metal ornaments, it
shall refer to this Standard.
2 Normative References
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited apply. For undated references,
the latest edition of the referenced document (including all corrigendum) apply.
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 17832 Silver Jewellery Alloys — Determination of Silver — Volumedtric
(Potentionmetric) Method Using Potassium Bromide (GB/T
17832-2008, ISO 11427.1993, MOD)
GB/T 18781 Cultured Pearl Grading
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)
GB/T 21198.6 Determination of Precious Metals in Precious Metals Jewellery
Alloys — Method Using ICP Spectrometry — Part 6. Difference
Method
GB/T 23885 Jadeite Grading
GB/T 28480 Adornment — Provision for Limit of Baneful Elements
1) It excludes welding powder. However, the content of the finished product (except accessories) must not be
lower than the specified fineness range.
(999) (Thousand-pure palladium, thousand-pure palladium gold)
Silver and its alloy
(999)
(Pure silver)
(Thousand-pure silver)
Note 1. The values and representation which are not in brackets are preferable.
Note 2. The theoretical fineness of 24K is 1000‰.
4.2 The material fineness of jewellery accessories shall be consistent with the
jewellery main body. If it is needed by strength and elasticity, the accessory material
shall conform to the following requirements.
a) For gold jewellery of which the gold content is not lower than 916‰ (22K),
the gold content of their accessories shall not be lower than 900‰.
b) For platinum jewellery of which the platinum content is not lower than 950‰,
the platinum content of their accessories shall not be lower than 900‰.
c) For palladium jewellery of which the palladium content is not lower than
950‰, the palladium content of their accessories shall not be lower than
900‰.
d) For pure silver and thousand-pure silver jewelleries, the silver content of their
accessories shall not be lower than 925‰.
4.3 Precious metals and the elements contained in alloy jewelleries must not be
harmful to human health. The contained harmful elements shall meet the
requirements of GB 28480.
5 Marks of Jewellery Products
5.1 Marking
5.1.1 Content of marking
The content of marking shall include. manufacturer code, material, fineness, and the
mass of the main diamond (above 0.10 karat) for diamond-inlay jewellery.
Example. jewellery of 18 K gold, 0.45 karat diamond-inlay, made by a certain company
(manufacturer code. ABC) is marked as. ABC 18K Gold 0.45 ct D.
5.1.2 Representation of fineness and material marking
5.1.2.1 The main body is marked according to the specifications in Table 1. The
accessories are marked according to the requirements in 4.2.
5.1.2.2 Gold jewellery. Combination of “thousand-fineness (K value)”, "Gold", "Au"
or "G". For example. Gold 750 (18K Gold), Au750 (Au18K), G750 (G18K).
Appendix A
(Informative)
Comparison of Chapters and Articles’ Numbers between This Standard
and ISO 9202.1991
Table A.1 gives the comparison list of chapters and articles’ numbers between this
Standard and ISO 9202.1991.
Table A.1 Comparison List of Chapters and Articles’ Numbers between This Standard and ISO
9202.1991
Numbers of chapters and articles in this Standard Numbers of corresponding chapters and articles in the international Standard
2 —
3.1 2.1
3.2 —
4.1 3
4.2 —
4.3 —
5 —
7 —
Note 1. The theoretical value of 24K is 1000 ‰.
Note 2. "Pure (platinum, platinum, palladium, silver)" is the highest fineness of jewellery products specified in this
standard; it means that the precious metal content is not less than 990 ‰.
4.2 The fineness of jewellery accessories shall be consistent with the
main-body. Due to the needs of strength and elasticity, the accessory’s
materials shall meet the following requirements.
4.2.1 For gold jewellery of which the gold content is not less than 916 ‰ (22K),
the accessory’s gold content shall not be less than 900 ‰.
4.2.2 For platinum jewellery of which the gold content is not less than 950 ‰
(22K), the accessory’s platinum content shall not be less than 900 ‰.
4.2.3 For palladium jewellery of which the gold content is not less than 950 ‰
(22K), the accessory’s palladium content shall not be less than 900 ‰.
4.2.4 For pure silver jewellery, the accessory’s silver content shall not be less
than 925 ‰.
4.3 The elements contained in precious metals and their alloys must not be
harmful to human health. The contained elements shall meet the provisions of
GB 28480.
II. Chapter 7 is changed as.
7.1 Designation content of precious metal jewellery content can only include
fineness, material, gem’s name and jewellery varieties. There must not have
other content before or after the designation.
Example 1. 18K Gold Ruby Ring
Example 2. Pt900 Diamond Ring
7.2 The designation of precious metal’s material and fineness shall be based
on the provisions of Table 1.
7.3 The designation of the precious metal’s jewellery shall be based on the
provisions of QB/T 1689.
7.4 Inlaid gem’s identification and designation shall be in accordance with
GB/T 16552, GB/T 16553, GB/T 16554, GB/T 18781, GB/T 23885. For the
gem on ...
......
GB/T 11887‐2008
GB
ICS 39.060
Y 88
NATIONAL STANDARD
OF THE PEOPLE’S 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, 铂 950 (platinum 950), 铂 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...
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