GB/T 25071-2010Classification and codes for products of gems and precious metals (English PDF)

2.1 Jewelery gems

Natural jade jewelry (including natural stones, natural jade and natural organic gem) and artificial gems (including synthetic stones, artificial stones,

Mosaic stones and reconstructed precious) collectively, referred to as the gem.

[GB/T 16552-2003, Definition 3.1]

2.2 Precious metals

Gold, silver and platinum group metals collectively.

[GB/T 17684-2008, Definition 2.1]

2.3 Jewelery and precious metals products

Jade jewelery or precious metal as the main raw material, semi-finished and finished products.

3.1 Principles and methods of classification

For jewelery and precious metals products can be classified according to the following classification.

a) according to its material to be divided;

b) classified in accordance with its varieties.

This chapter were given jewelery and precious metals products, materials classification and species classification code table code table.

3.2 Material Categories

3.2.1 Classification and Coding

Material classification taxonomy using the wire material for jewelery and precious metals products to be divided, the coding method using the six-digit code level,

1,2 indicates major categories, 3, 4-bit representation, Class 5,6 indicates subcategories, see Figure 1.

××

1,2 indicates major categories

××

3 and 4 indicates the class

×× presentation code

5,6 indicates subcategories

Figure 1 classification code structure of the material

3.2.2 code table

Classification and material classification codes are shown in Table 1.

GB/T 18348-2022 | GB/T 23832-2022 | GB/T 23833-2022 | GB/T 18391.3-2026 | GB/T 18391.2-2026 | GB/T 18391.1-2026 | […]