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GB/T 34543-2017 English PDF

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GB/T 34543-2017: Yellow diamond grading
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GB/T 34543-2017English198 Add to Cart 2 days [Need to translate] Yellow diamond grading Valid GB/T 34543-2017

PDF similar to GB/T 34543-2017


Standard similar to GB/T 34543-2017

GB/T 16552   GB/T 5195.12   SN/T 0481.7   GB/T 45611   GB/T 34545   

Basic data

Standard ID GB/T 34543-2017 (GB/T34543-2017)
Description (Translated English) Yellow diamond grading
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard D59
Classification of International Standard 39.060
Word Count Estimation 14,176
Date of Issue 2017-10-14
Date of Implementation 2018-05-01
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

GB/T 34543-2017: Yellow diamond 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.
Yellow diamond grading ICS 39.060 D59 National Standards of People's Republic of China Yellow diamond grading 2017-10-14 Published 2018-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released Directory Foreword Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 color grading 2 5 clarity rating 4 6 grading requirements 4 7 cut evaluation 4 8 yellow diamond quality 6 9 yellow diamond grading certificate 6 Appendix A (informative) yellow diamond observation diagram 7 Appendix B (informative) yellow diamond common types of cutting and cutting ratio 8 Reference 9

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard proposed by the Ministry of Land and Resources. This standard by the National Gems Standardization Technical Committee (SAC/TC298) centralized. This standard was drafted unit. Ministry of Land and Resources jewelery jewelery management center Beijing Institute of jewelry, jewelery quality supervision and inspection center. The main drafters of this standard. Zhang Jian, Lu Taijin, Xu Yingqian, Liu Houxiang, Chen Hua, Song Zhonghua, Lan Yan, Ke Jie, Bi Lijun. Yellow diamond grading

1 Scope

This standard specifies the natural un-polished non-polished yellow diamond grading rules. This standard applies to non-mosaic polished yellow diamond grading, mosaic polished yellow diamond grading can refer to the implementation of this standard.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 16552 name of jewelry jade GB/T 16553 jewelery identification GB/T 16554 diamond grading

3 Terms and definitions

GB/T 16552, GB/T 16553 and defined by the following terms and definitions apply to this document. 3.1 Diamond An equiaxed crystal natural mineral consisting of carbon atoms with a Mohs hardness of 10, a density of 3.52 (± 0.01) g/cm3, a refractive index of 2.417, a dispersion value 0.044. 3.1.1 Yellow diamond yelowdiamond The main color tone is yellow, chroma to light color diamonds. 3.2 Yellow diamond graded yelowdiamondgrading From the color, clarity, quality and other aspects of the yellow diamond grade, and cut its evaluation. 3.3 Color grading colorgrading Using colorimetry, the color of the yellow diamond is graded under specified conditions. 3.3.1 Hue hue Diamond yellow, green, orange and other colors of the characteristics. 3.3.2 Saturation chroma Yellow diamond color intensity level. 3.3.3 Brightness value Yellow diamond color brightness level.

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