|
US$359.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 44914-2024: Hetianyu grading
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 44914-2024 | English | 359 |
Add to Cart
|
4 days [Need to translate]
|
Hetianyu grading
| Valid |
GB/T 44914-2024
|
PDF similar to GB/T 44914-2024
Basic data | Standard ID | GB/T 44914-2024 (GB/T44914-2024) | | Description (Translated English) | Hetianyu grading | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D59 | | Classification of International Standard | 390.060 | | Word Count Estimation | 18,144 | | 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 44914-2024: Hetianyu 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.
National Standard of the People's Republic of China
ICS 390.060CCS D 59
Hetian Jade Grading
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 and classification 3
5 Grading requirements 3
6 Hetian Jade Color Grading...3
7 Hetian Jade Texture Grading...7
8 Hetian Jade Clarity Grading...8
9 Hetian Jade Uniformity Grading...8
10 Evaluation of Hetian Jade Craftsmanship Quality...9
11 Hetian Jade Grading Certificate...9
12 Logo...10
Appendix A (Informative) Schematic diagram of Hetian jade observation...11
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., Xinjiang
Uygur Autonomous Region Product Quality Supervision and Inspection Institute, National Jewelry and Jade Inspection Group Co., Ltd., Beijing Boguan International Auction Co., Ltd.
Co., Ltd., Guangdong Jewelry, Jade and Precious Metals Testing Center, China University of Geosciences (Wuhan), Beijing Caishikou Department Store Co., Ltd., Shenzhen
Shenzhen Guoyu Tiangong Industrial Co., Ltd. and Zhenping County Shengsheng Crafts Co., Ltd.
The main drafters of this document are. Dai Sulan, Chen Dapeng, Li Xinling, Xu Zhenhua, Qu Wei, Yu Yunfeng, Yang Lixin, Luo Qinfeng, Xia Yumei, Xu Su,
Chen Hongxia, Zhang Yong, Hu Yao, Feng Xiaoyan, Ao Yan, Yang Mingxing, Wang Chunli, Lu Hui, Wang Jingjie, Li Songying, Wang Boyu, Liao Jun, Wang Shujie, Liu Jiao,
Ma Zhao, Wang Duo, Xu Zebin, and Fan Yue.
Hetian Jade Grading
1 Scope
This document specifies the identification and classification of Hetian jade, grading requirements, grading items and grading methods, process quality evaluation, grading certificates,
Logo.
This document is applicable to the grading of Hetian white jade, jasper and topaz products. The grading of Hetian white jade, jasper and topaz raw materials is implemented as a reference.
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/T 16553 Jewelry and Jade Identification
GB/T 31912 Jewelry Marking
GB/T 36127 Evaluation of the craftsmanship quality of jade carving products
GB/T 38821 Identification and Classification of Hetian Jade
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Hetianyu
A collection of tremolite minerals produced in nature, which are beautiful, durable, rare and have craft value and can be processed into jewelry.
It can be actinolite, and may contain small amounts of calcite, diopside, graphite, pyrite, chromite, magnetite, quartz, serpentine, chlorite, epidote, silica.
Minerals such as limestone, apatite and garnet. Refractive index 1.60~1.61 (point measurement), density 2.95 (0.15, -0.05) g/cm3.
[Source. GB/T 38821-2020, 3.1, modified]
3.2
Baiyu
The main color of Hetian jade is white, with slight other tones.
[Source. GB/T 38821-2020, 3.3, modified]
3.3
YangzhiBaiyu
The color grade, texture grade, clarity grade and uniformity grade of white jade are all A grade.
3.4
Biyu
The main colors of Hetian jade range from light to dark green, gray-green, blue-green, and slightly yellowish green, and are colored by elements such as iron, nickel, and chromium.
[Source. GB/T 38821-2020, 3.6, modified]
3.5
Huangyu
The main color of Hetian jade is light to medium yellow, green yellow and other colors.
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 44914-2024_English be delivered?Answer: Upon your order, we will start to translate GB/T 44914-2024_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of GB/T 44914-2024_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 44914-2024_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.
|