GB/T 44913-2024 English PDF

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GB/T 44913-2024: Filled monocrystal gemstones - Identification and classification
Status: Valid

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Similar standards

GB/T 16552   GB/T 5195.12   SN/T 0481.7   GB/T 44914   GB/T 44910   

Basic data

Standard ID: GB/T 44913-2024 (GB/T44913-2024)
Description (Translated English): Filled monocrystal gemstones - Identification and classification
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: D59
Classification of International Standard: 39.060
Word Count Estimation: 18,143
Date of Issue: 2024-11-28
Date of Implementation: 2025-06-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 44913-2024: Filled monocrystal gemstones - Identification and classification

---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.
National Standard of the People's Republic of China ICS 39.060CCS D 59 Identification and classification of filled and treated single crystal gemstones 2024-11-28 Release 2025-06-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Table of Contents

Preface Ⅲ 1 Scope...1 2 Normative references ...1 3 Terms and Definitions 1 4 Identification 1 5 Classification requirements 3 6 Categories...3 7 Naming and Expression Methods 4 8 Filled and treated single crystal gem identification certificate...5 Appendix A (Informative) Example of infrared spectrum of single crystal gemstones with filling treatment ...7 Appendix B (Informative) Examples of Raman spectra of different types of fillings 10

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting is required. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document is proposed by the Ministry of Natural Resources of the People's Republic of China. This document is under the jurisdiction of the National Technical Committee on Standardization of Jewellery and Gemstones (SAC/TC 298). This document was drafted by. Sichuan Product Quality Supervision, Inspection and Testing Institute, Chengdu Product Quality Inspection Institute Co., Ltd., National Jewelry and Jade Inspection Group Co., Ltd., Guangdong Jewelry and Jade and Precious Metals Testing Center, Shandong Institute of Metrology, Shenzhen Xingguangda Jewelry Industrial Co., Ltd. and Jiangsu Gold Jewelry Testing Center Co., Ltd. The main drafters of this document are. Dai Sulan, Qu Wei, Zhang Jun, Xia Yumei, Xu Su, Chen Hongxia, Chen Dapeng, Luo Qinfeng, Xiong Yan, Wang Yimeng, Su Jun, Li Haibo, Cheng Youfa, Li Jianjun, Lin Changwei, Zhu Demao, Liao Jun, Wang Shujie, Wang Ling, Zhao Xin. Identification and classification of filled and treated single crystal gemstones

1 Scope

This document specifies the identification, classification requirements, classification, naming and representation methods of filled and treated single crystal gemstones, Stone identification certificate. This document applies to the identification, classification and labeling of filled and processed single crystal gemstone materials and products.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB 11887 Regulations and naming methods for purity of precious metals in jewelry GB/T 16552 Names of Jewellery and Jade GB/T 16553 Jewelry and Jade Identification GB/T 31912 Jewelry Marking GB/T 33541 Criteria for determining acceptance of sampling inspection of jewellery, jade and precious metal products

3 Terms and definitions

The terms and definitions defined in GB/T 16552, GB/T 16553, GB/T 31912 and GB/T 33541 and the following terms and definitions apply to this document. 3.1 monocrystal gemstones Produced by nature, it is beautiful, durable, rare, and can be processed into mineral single crystals (may contain twin crystals) for jewelry. 3.2 Filling Use colorless to nearly colorless oil, wax, resin, glass and other materials to fill the gaps, (open) cracks, and cavities of jewelry and jade, or to inject porous, A fractured gemstone that has been artificially treated to improve or change its clarity, appearance, and durability. [Source. GB/T 16552-2017, 3.4.6, modified] 3.3 filled monocrystal gemstones A single crystal gemstone that has been artificially filled and has fillings in its cracks, cavities, and defects.

4 Identification

4.1 Identification Process 4.1.1 The species identification of single crystal gemstones shall be carried out in accordance with GB/T 16553. 4.1.2 The identification of filled single crystal gemstones shall be carried out in accordance with 4.2. ......

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