Chinese Standard: GB/T 29155-2012

Transparent jadeite(colorless) grading

全国珠宝玉石标准化技术委员会(SAC/TC 298)

本标准规定了天然的未镶嵌和镶嵌的抛光透明翡翠（无色）的分级规则。
本标准适用于椭圆弧面型未镶嵌及镶嵌的透明翡翠（无色）。
非椭圆弧面型透明翡翠（无色）的透明度、质地、净度分级和颜色色调类别划分，均可参照本标准执行。

This standard is the original Chinese electronic standard.
If you need translation, please contact email: ChineseStandardsLibraryS001@gmail.com.
After you successfully purchase, we will send the electronic version of this standard to your email address.