国际认证证书

钻工业的宝石多数是由国际权威认证的宝石鉴定机构如IGI或GIA鉴定认证。

IGI-Cert
GIA-Cert-color_diamond
GIA-Cert-Corundum
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IGI-Cert
GIA-Cert-color_diamond
GIA-Cert-Corundum
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next arrow