This standard specifies the terms and definitions of natural unmounted and mounted polished diamonds, diamond color, clarity, cut grading rules, diamond weight and diamond grading report.
This standard is applicable to diamond grading and related activities in the fields of gems testing, cultural relics testing, commerce and trade, customs, insurance, pawn, asset evaluation, scientific research teaching, and literature publishing.
The color grading in this standard is applicable to unmounted and mounted polished diamonds in the color series ranging from colorless to pale yellow (brown, gray).
The cut grading in this standard is applicable to unmounted and mounted polished diamonds of round brilliant cut.
The grading rules in this standard are applicable to unmounted and mounted polished diamonds that have not been treated by coating,filling, etc.
The grading rules in this standard are applicable to unmounted polished diamonds with a weight of 0.040 0 g(0.2

定价： 1104元 / 折扣价： 939 元 加购物车

本标准规定了天然的未经优化处理或经热处理的未镶嵌刻面磨制抛光红宝石的分级规则。本标准适用于天然的未经优化处理或经热处理的未镶嵌刻面磨制抛光红宝石的分级，镶嵌刻面磨制抛光红宝石可参照本文件执行。

定价： 31元 / 折扣价： 27 元 加购物车

本标准规定了珠宝玉石及贵金属饰品质量核查的抽样、检验、判定及复查的要求和方法。
本标准适用于珠宝玉石及贵金属饰品的质量核查。珠宝玉石及贵金属其他产品可参照本标准执行。

定价： 29元 / 折扣价： 25 元 加购物车

本标准规定了石英质玉的定义、鉴定特征、分类和命名。本标准适用于石英质玉的原料和成品。

定价： 24元 / 折扣价： 21 元 加购物车

This standard specifies the grading rules for natural untreated and unset polished yellow diamond.
This standard is applicable to the grading of unmounted polished yellow diamond. It may serve as a reference for the grading of mounted polished yellow diamond.

定价： 456元 / 折扣价： 388 元 加购物车

本标准规定了天然的未经优化处理或经净度优化的未镶嵌刻面磨制抛光祖母绿的分级规则。本标准适用于天然的未经优化处理或经净度优化的未镶嵌刻面磨制抛光祖母绿的分级，非刻面磨制抛光祖母绿及镶嵌祖母绿的分级可参照本标准执行。

定价： 38元 / 折扣价： 33 元 加购物车

本标准规定了天然和经优化处理绿松石的鉴定特征及鉴定方法。
本标准适用于绿松石鉴定。

定价： 38元 / 折扣价： 33 元 加购物车

本标准规定了天然的未经优化处理或经热处理的未镶嵌刻面磨制抛光蓝宝石的分级规则。
本标准适用于天然的未经优化处理或经热处理的未镶嵌刻面磨制抛光蓝宝石的分级，镶嵌刻面磨制抛光蓝宝石的分级可参照本标准执行。
本标准适用于蓝色蓝宝石分级，其他颜色蓝宝石的分级除颜色外可参照本标准执行。

定价： 38元 / 折扣价： 33 元 加购物车

This standard specifies the grading rules for unmounted polished and faceted natural sapphires which have not been subjected to enhancement or heat treatment.
This standard is applicable to the unmounted polished and faceted natural sapphires which have not been subjected to enhancement or heat treatment.For the grading of inlaid faceted polished sapphires, this standard may be used as a reference.
This standard is applicable to the blue sapphire grading.The grading of sapphires with other colors may be carried out by reference to this standard.

定价： 516元 / 折扣价： 439 元 加购物车

This standard specifies the grading rules for unmounted polished and faceted natural rubies which haven't been subjected to enhancement.
This standard is applicable to the grading of unmounted polished and faceted natural rubies which haven't been subjected to enhancement. For the grading of mounted faceted polished rubies,this standard may be used as a reference.

定价： 516元 / 折扣价： 439 元 加购物车

本标准规定了天然的未经优化处理的未镶嵌抛光黄色钻石的分级规则。本标准适用于未镶嵌抛光黄色钻石的分级，镶嵌抛光黄色钻石的分级可参照本标准执行。

定价： 31元 / 折扣价： 27 元 加购物车

本标准规定了玉雕制品分类、玉雕制品工艺质量评价及等级。
本标准适用于未镶嵌玉雕制品的工艺质量评价，宝石雕刻制品、镶嵌玉雕制品可参照执行。

定价： 31元 / 折扣价： 27 元 加购物车

本标准规定了天然或优化的未镶嵌抛光绿松石的术语和定义，绿松石颜色、质地、表面洁净度的分级规则，绿松石透明度、光泽、花纹的描述，绿松石分级要求、质量计量和分级证书。本标准适用于天然或优化的未镶嵌抛光绿松石的分级，镶嵌抛光绿松石可参照使用。

定价： 49元 / 折扣价： 42 元 加购物车

本文件规定了南红的定义、鉴定项目、鉴定特征、鉴定方法、优化处理方法及其鉴定，以及定名规则和表示方法等。本文件适用于南红产品及原料的鉴定。

定价： 31元 / 折扣价： 27 元 加购物车

This standard specifies the requirements, test methods, conformity with standard, packing, marking, transporting, storing and order (or contract) content of synthetic cryolite.
This standard is applicable to cryolite synthesized with hydrofluoric acid, hexafluorosilicic acid or sodium fluorosilicate, which is mainly used for the aluminum production.

定价： 288元 / 折扣价： 245 元 加购物车