美国鉴定机构“GCAL”推出8X钻石分级标准

“8X”钻石分级

8xzhiwulitexing（paoguang、waibuduichengxing、bili）、guangxuetexing（liangdu、huocai、shanshuodu）heshijuetexing（guangxueduichengxing、xinyujian）zhei8xiangzhibiao。zhiyouzhei8xiangzhibiaodoudadaoleexcellentjibie，caihuibeijiyu8xdengji。

gcalrenwei，zaijintiandeshichangshang，chaoguoyibandeyuanxingcuicanqiegezuanshibeishouyuleyouliangqiegedengji，danzhiyoubudao1%dezuanshifuheqixuanchuande8xqiegedengji。gcal 8xzhongjiqiegedengjidejianli，shiweilerangtiaotidemaijianapabukanshiwu，yekeyizixindixuanzezuicuicandezuanshi。

gcalguanfangtuichulesanlei“8x”zuanshizhengshu：tianranzuanshizhengshu、peiyuzuanshizhengshuhedianzibanzhengshu。

关于GCAL

gcal，quancheng gem certification & assurance lab“baoshijiandingjibaozhangshiyanshi”。gcal chengliyu2001nian，yu2014nianchengweiquanqiuweiyi huodeiso 17025 forensic accreditationrenzhengdebaoshijiandingshiyanshi。