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GB/T 44913-2024Filled monocrystal gemstones—Identification and classification (English PDF)

充填处理单晶体宝石鉴定与分类

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

November 28, 2024

Implementation date

June 1, 2025

Scope

GB/T 44913-2024 is the English-translated version of 充填处理单晶体宝石鉴定与分类.

GB/T 44913-2024 is the Chinese national standard covering gem-quality single crystals whose cracks and cavities have been filled with oil, wax, resin or glass to make them look clearer — the identification procedure, the infrared and Raman spectra that tell one filler from another, the classification requirements and the categories, the naming and expression method, and the identification certificate, which is where a buyer finds out the stone was treated at all. First edition, with the Hetian jade grading standard GB/T 44914-2024, under the Ministry of Natural Resources. In force from 1 June 2025. Issued on 28 November 2024, it has been in force since 1 June 2025.

Document preview — GB/T 44913-2024

National Standard of the People's Republic of China

ICS: 39.060
Classification: D 59

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

PrefaceIII
1 Scope1
2 Normative references1
3 Terms and Definitions1
4 Identification1
5 Classification requirements3
6 Categories3
7 Naming and Expression Methods4
8 Filled and treated single crystal gem identification certificate5
Appendix A (Informative) Example of infrared spectrum of single crystal gemstones with filling treatment7
Appendix B (Informative) Examples of Raman spectra of different types of fillings10

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

GB 11887

GB/T 16552

GB/T 16553

GB/T 31912

GB/T 33541

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.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.

Referenced standards

Normative references

GB 11887

Editions of GB/T 44913

Edition	Title	Revision	Status
GB/T 44913-2024	Filled monocrystal gemstones - Identification and classification	current edition	Current

This page sells the current edition, GB/T 44913-2024. Earlier editions are listed for reference only.

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