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SN/T 2265-2009: Rough diamond inspection and grading
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Rough diamond inspection and grading
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SN/T 2265-2009
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PDF similar to SN/T 2265-2009
Standard similar to SN/T 2265-2009 GB/T 16552 SN/T 3321.1 SN/T 0481.7 Basic data | Standard ID | SN/T 2265-2009 (SN/T2265-2009) | | Description (Translated English) | Rough diamond inspection and grading | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | D58 | | Classification of International Standard | 39.060 | | Word Count Estimation | 12,143 | | Date of Issue | 2009-02-20 | | Date of Implementation | 2009-09-01 | | Quoted Standard | GB/T 16552; GB/T 16553-2003; GB/T 16554-2003; GB/T 18303-2008 | | Adopted Standard | ISO/FDIS 11211-1-2002, NEQ; ISO/FDIS 11211-2-2002, NEQ | | Regulation (derived from) | 2009 No. 5 (total 113) Chinese industry standard filing Announcements | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the natural rough diamonds single inspection and grading regulations. This standard applies to single gem processing of rough diamonds inspection and shape, color, clarity and quality grading. | SN/T 2265-2009: Rough diamond inspection and 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.
Rough diamond inspection and grading
Exit inspection and quarantine industry standard book People's Republic of China
Inspection and grading rough diamonds
Posted 2009-02-20
2009-09-01 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
The standard reference national standard GB/T 16554-2003 "diamond grading", the international standard ISO /FDIS11211-1.2002 "polishing
Diamond Grading Part 1 Terminology and classification ", ISO /FDIS11211-2.2002" Part 2 polished diamond grading detection method "
The technical content.
Appendix B of this standard is a normative appendix, Appendix A is an information appendix.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard was drafted. People's Republic of China Guangdong Entry-Zhongshan University, Shanghai Jiaotong University, People's Republic of China
State Shanghai Entry-Exit Inspection and Quarantine, Shenzhen People's Republic of China, People's Republic of China Shandong Entry-Exit Inspection and
Quarantine Bureau, People's Republic of China Zhejiang Entry-Exit Inspection and Quarantine, Ningbo People's Republic of China, People's Republic of China
State Zhuhai CIQ.
The main drafters of this standard. Tan Wenming, Schaeffer, Qiuzhi force, Shi Jian, He Ping, Cao, Zhang Liang, Gong Shengwei, wheat Zhiqiang, Zhang Chu Fu?.
This is the first version of the entry-exit inspection and quarantine industry standards.
Inspection and grading rough diamonds
1 Scope
1.1 Scope
1.1.1 This standard specifies the rules for testing and classification of natural single rough diamonds.
1.1.2 This standard applies to the use of single gem rough diamonds inspection and shape, color, clarity and quality grading.
1.2 Conditions
1.2.1 Quality rough diamonds is not less than 0.002g (0.01ct, inclusive), no more than 2.000g (10.00ct, inclusive).
1.2.2 rough diamonds without hull.
Color 1.2.3 rough diamonds is colorless to light yellow (brown, gray) color series.
1.2.4 Internal features rough diamonds easy to observe.
1.2.5 rough diamonds is expected to be processed into a standard round brilliant, cut into other type may refer to this standard is expected to out perform the relevant content.
1.2.6 rough diamonds without a coating, crack filling, change color and other optimization.
1.2.7 mass greater than 2.000g (10.00ct) rough diamond grading execution may refer to this standard.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 16552 jewelery name
GB/T 16553-2003 jade jewelry appraisal
GB/T 16554-2003 diamond grading
GB/T 18303-2008 diamond color grade visual evaluation method
3 Terms
GB/T 16552, GB/T 16553-2003, GB/T 16554-2003, GB/T 18303-2001 and established the following terms
And definitions apply to this standard.
3.1
After pondering the rough diamonds and polished made for decoration purposes. Common cut standard round brilliant type and other special-shaped and so on.
3.2
Select from the sediment or rock out, not only by working or simply sawn, cleaved, kibble, or only a small amount polished surface (in order to facilitate special
Industry sources on the internal characteristics of the rough diamonds were observed due to polishing) diamonds.
3.3
From the outline (shape), color (colour), clarity (clarity) and quality (caratweight) four aspects of rough diamonds Ratings
Division.
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