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Provision of permissible errors for measurement of polished diamond mass
全国珠宝玉石标准化技术委员会(SAC/TC 298)
本标准规定了抛光钻石质量测量允差的要求、试验方法和标注。
本标准适用于以质量结算的抛光钻石的贸易及质量监督。
本标准适用于质量大于或等于0.040 0g(0.20 ct)的单粒抛光钻石;质量小于0.040 0 g(0.20 ct)的单粒抛光钻石及群镶、批量结算的抛光钻石,可参照本标准执行。
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