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GB/T 43447-2023: Jewellery - Colours of gold alloys - Definition, range of colours and designation
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| GB/T 43447-2023 | English | 429 |
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Jewellery - Colours of gold alloys - Definition, range of colours and designation
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GB/T 43447-2023
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Basic data
| Standard ID | GB/T 43447-2023 (GB/T43447-2023) |
| Description (Translated English) | Jewellery - Colours of gold alloys - Definition, range of colours and designation |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | Y88 |
| Classification of International Standard | 39.060 |
| Word Count Estimation | 21,277 |
| Date of Issue | 2023-11-27 |
| Date of Implementation | 2024-06-01 |
| Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 43447-2023: Jewellery - Colours of gold alloys - Definition, range of colours and designation
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 39:060
CCSY88
National Standards of People's Republic of China
Jewelry Gold Alloy Color
Definitions, color ranges and naming
(ISO 8654:2018,MOD)
Published on 2023-11-27
2024-06-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Foreword
This document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents"
Drafting:
This document has been modified to adopt ISO 8654:2018 "Jewellery Gold Alloy Color Definition, Color Range and Naming":
Compared with ISO 8654:2018, this document has many structural adjustments: Comparison list of structure number changes between the two files
See Appendix A:
Compared with ISO 8654:2018, this document has many technical differences: Use vertical single words in the outer margin of the clauses involved:
Lines (|) are marked: A list of these technical differences and their causes is provided in Appendix B:
The following editorial changes have been made to this document:
---Incorporated the amendments to ISO 8654:2018/Amd:1:2019, the outer margins of the clauses involved are marked with vertical
Double lines (‖) are marked:
Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents:
This document is proposed by China Light Industry Federation:
This document is under the jurisdiction of the National Jewelry Standardization Technical Committee (SAC/TC256):
This document was drafted by: Beijing Guoshou Jewelry Testing Co:, Ltd:, Shenzhen Xingguangda Jewelry Industrial Co:, Ltd:, Chow Tai Fook
Jewelry and Gold Shop (Shenzhen) Co:, Ltd:, Shenzhen Ganlu Jewelry Co:, Ltd:, Guangzhou Panyu Vocational and Technical College, Wuhan Zhongdi Jewelry Inspection
Testing Co:, Ltd:, Guangdong Gold and Silver Jewelry Testing Center Co:, Ltd:, Shenzhen Baitai Investment Holding Group Co:, Ltd:, Shenzhen Xianshi Jewelry
INDUSTRIAL DESIGN INSTITUTE LIMITED:
The main drafters of this document: Li Suqing, Gao Juncai, Li Kun, Lin Changwei, Liao Zhenwei, Zheng Huanjian, Huang Yanyou, Di Jingru, Zhou Cankun,
Tang Ziwei, Yang Mingxing, Luo Yueping, Cai Yuanyang, Chen Shan, Zheng Qiuju, Xu Xingyang:
Jewelry Gold Alloy Color
Definitions, color ranges and naming
1 Scope
This document specifies the definitions, nomenclature and color measurement methods related to the color of gold alloys:
This document applies to gold alloy products or gold alloy covered products:
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document:
GB/T 3977 Color Representation Method (GB/T 3977-2008,CIE15:2004,NEQ)
GB/T 3978 Standard lighting bodies and geometric conditions (GB/T 3978-2008, CIE15:2004, CIES005:1999, NEQ)
GB/T 3979 Measurement method of object color (GB/T 3979-2008,CIE15:2004,NEQ)
GB/T 7921 Uniform color space and color difference formula (GB/T 7921-2008, CIE15:2004, CIE142:2001, NEQ)
3 Terms and definitions
The terms and definitions defined in GB/T 3977, GB/T 3978, GB/T 3979, GB/T 7921 and the following apply to this document:
3:1
colorcolour
Visual properties represented by chromaticity coordinates x, y and stimulus value Y:
Note 1: GB/T 3979 stipulates that the value of Y is consistent with the percentage of light reflection factor:
Note 2: When used for specific purposes or in the field of national standardization, the chromaticity coordinates can be converted into other nationally or internationally recognized colors according to GB/T 7921:
degree system (such as CIE1976L*a*b* color space or CIE1976L*u*v* color space):
3:2
tolerance tolerance
The tolerance range of the nominal value of the chromaticity coordinate corresponding to a certain color number:
3:3
color filmcolourslip
Flake precious metal products showing a specific color made according to a certain chemical composition:
4 naming
According to the chromaticity coordinates, the naming of the seven colors is shown in Table 1:
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