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GB/T 32863-2016: Ruby grading
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 32863-2016 | English | 228 |
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Ruby grading
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GB/T 32863-2016
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Basic data | Standard ID | GB/T 32863-2016 (GB/T32863-2016) | | Description (Translated English) | Ruby grading | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D59 | | Classification of International Standard | 39.060 | | Word Count Estimation | 14,115 | | Date of Issue | 2016-08-29 | | Date of Implementation | 2017-03-01 | | Quoted Standard | GB/T 16552; GB/T 16553 | | Regulation (derived from) | National Standard Announcement 2016 No.14 | | 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 standard specifies the grading rules for natural, unprocessed or heat-treated, inlaid facets to grind polished rubies. This standard applies to the natural non-optimized or heat-treated non-inlaid faceted polished ruby ??grading, inlaid engraved polishing ruby ??can refer to this document. | GB/T 32863-2016: Ruby grading---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.
Ruby grading
ICS 39.060
D59
National Standards of People's Republic of China
Ruby grading
2016-08-29 released
2017-03-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Directory
Preface I
1 Scope 1
2 normative reference document 1
3 Terms and definitions 1
4 ruby identification 2
5 ruby color grading 2
6 ruby clarity grading 3
7 ruby fire color grading 4
8 ruby heat treatment 4
9 grading requirements 5
10 rubbish cut 5
11 ruby quality 6
12 ruby grading certificate 6
Appendix A (informative) Common ruby and internal and external features Type 7
Appendix B (informative) ruby observation diagram 8
Appendix C (informative) ruby heat treatment type 9
Appendix D (informative) Common types of rubhes and cut ratio of rubies 10
Reference 11
Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard by the National Jade and Jade Standardization Technical Committee (SAC/TC298) centralized.
The drafting of the standard units. the National Jade Jade Quality Supervision and Inspection Center, Chow Tai Fook Jewelery Bank (Shenzhen) Co., Ltd., Shenzhen City in the
Thai precious stones Limited.
The main drafters of this standard. storm Wei, Zheng Mingzhi, Zhao Feng, Wang Manjun, Ma Yangwei, Ke Jie, Bi Lijun.
Ruby grading
1 Scope
This standard specifies the grading rules for natural, unprocessed or heat-treated, inlaid faceted polished rubies.
This standard is applicable to natural non-optimized or heat-treated non-inlaid faceted polished ruby grades,
Polishing rubies can be performed with reference to this document.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
GB/T 16552 Name of jewelery and jade
GB/T 16553 Jewelery Identification
3 terms and definitions
The following terms and definitions apply to this document.
3.1
Ruby ruby
Mainly from the Cr ion color, the color is medium to dark red corners of the corundum gem, the chemical composition of Al2O3, can contain Fe, Ti, V, Mn
And other elements. Mohs hardness of 9, the refractive index of 1.762 ~ 1.770 (0.009, -0.005), birefringence value of 0.008 ~ 0.010, density
4.00 g/cm3 ± 0.05 g/cm3.
3.2
From the color, clarity, fire color, quality and other aspects of the ruby level division.
3.3
Color grading
Using colorimetric method, in the prescribed environment for the color of the ruby level division.
3.3.1
Hue hue
Said ruby red, purple, orange and other color characteristics.
3.3.2
Chroma
Ruby color saturation and lightness after the combination of a color show the effect of a color.
3.3.3
Ruby color grading standard sample rubycolor revisedansterset
An elliptical faceted ruby sample with a calibrated hue category and a chroma level, in turn, represents a different saturation level.
3.3.4
Color card
A standard color card that represents a certain color.
Note. In this document you can use "theMunselBookofColor-GlossyColection" for color matching.
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