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GB/T 34098-2017Quartzose jade - Classification and nomenclature (English PDF)

石英质玉 分类与定名

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

July 31, 2017

Implementation date

February 1, 2018

Scope

GB/T 34098-2017 is the English-translated version of 石英质玉 分类与定名.

GB/T 34098-2017 is the Chinese standard "Quartzose jade - Classification and nomenclature". Its scope clause reads: This standard specifies the definition of quartz jade, identification characteristics, classification and naming.

This standard applies to quartz jade raw materials and finished products. Its clauses include terms and definitions; categories.

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Document preview — GB/T 34098-2017

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

Contents

  • 1 Scope
  • 2 Normative references
  • 3 Terms and definitions
  • 4 categories

1 Scope

This standard specifies the definition of quartz jade, identification characteristics, classification and naming.

This standard applies to quartz jade raw materials and finished products.

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

3 Terms and definitions

GB/T 16552, GB/T 16553 and defined by the following terms and definitions apply to this document.

3.1 Quartz quality jade

Naturally produced, to meet the process requirements, mainly quartz quartz crystal - cryptocrystalline mineral aggregates, may contain a small amount of hematite, iron

Mine, mica, kaolinite, opal, organic matter and so on. Refractive index 1.53 ~ 1.55, density 2.53g/cm3 ~ 2.72g/cm3 (sometimes can be as low as

2.48 g/cm3 or up to 2.95 g/cm3) with a Mohs hardness of 6-7 (sometimes as low as 5.5).

3.2 Clear crystalline

A single mineral crystal particle can be identified under 10X magnification, and the vast majority of the mineral particles have a particle size greater than 20µm.

3.3 Cryptocrystalline

At 10X magnification, a single mineral crystal particle can not be identified, and the vast majority of the mineral particles have a particle size of less than 20 µm.

3.4 The basic name of quartz jade

Quartz jade species mineralogy, petrology, materials science and traditional gemmology name, is the name of quartz jade must be used for the district

Do not differ the name of the breed.

3.5 Quartz jade trade name

In addition to the basic name of quartz jade, jewelry jade circulation is widely used and generally accepted by the other names of quartz jade, such as

Quartet-related standards such as quartz jade alias.

4 categories

In accordance with the mineral composition, structure and appearance characteristics, quartz jade is divided into three major categories, seven varieties, see Table 1.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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