Chinese Standard: GB/T 32863-2016

Ruby 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。

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