已镶嵌钻石4C分级标准

　　rujin，zaizuanshizhuliushichang，xuangou30fenshixiaofeizhewangwanghuidedaolianggezhengshu——zuanshifenjizhengshu(gia、igi、hrddeng)hezuanshixiangqianfenjizhengshu(ngtc、ngstcdeng)，womenzhidao，guojishangduizuanshidejianding，zhuyaoshiyiluozuanweizhude，yibanbuzuochengpinzuanjiezuanshifenjizhengshu，neime，guoneizuanshixiangqianzuanshizhengshushiruhequedingzuanshi4cdeni?

　　国內镶嵌钻石分级历程

　　duiyuxiangqianzuanshijinxingfenjishiwoguodeyigechuangju。1996nian，genjuwoguozuanshishichangdeshijiqingkuang，zhidinglexiangqianzuanshidefenjiguize。

　　jinianlai，suizheguoneizuanshixiaofeishuipingderiyitigao，shangshudexiangqianzuanshifenjiguizeyibunengwanquanshiyingshichangdexuqiu，weici，2003nianduiyuanlaidefenjiguizezuoleyixiediaozheng，quxiaolexiangqianzuanshidepinzhidengji，zengjialeqiegongdeneirong，bingduiyansedengjizuoleyixiediaozheng。

　　xiangqianzuanshifenjide4cjianding

　　(1)镶嵌钻石的颜色级别

　　xiangqianzuanshiyansedequedingyuweixiangqianzuanshiyiyangdoucaiyongbisefajinxingfenji，gongfenwei7gejibie，xiangqianzuanshiyuweixiangqianzuanshiyansejibiededuiyingguanxixiangjianxiabiao。

　　xiangqianzuanshideyansefenjizhuyishixiang：

　　1)yansefenjiyingkaolvjinshutuoduizuanshiyansedeyingxiang。tongchangbaisedezuanshiyongbaisedejinshuxiangqian，erdaihuangsedezuanshizeyonghuangsedejinshuxiangqian，zheiyanghuishizuanshideyansexiandegengdanyixie，.yingzhu：xiyunjueyixiuzheng。

　　2)biseshizuihaoyongyuxiangqianjinshuxiangtongyansedezuanshizhuahuoniezijiazhubiseshi，yuxiangqianzuanshibijiaoxiangtongdebuwei(jiantu)。

　　3)yinweidijianbeizhedang，burongyibijiao，wangwangshibijiaoyaobushenzhitaimian(rubaoxiangshi)。cishiyaozhuyizuanshidaxiaoduiyansedeyingxiang。

　　4)yinweixiangqianzuanshiburongyibise，suoyiqisejidengjishiyigejiaokuandefanwei。

　　(2)镶嵌钻石的净度级别

　　xiangqianzuanshidejingdufenjifangfayuweixiangqianzuanshidejingdufenjifangfaleisi。yinweixiangqiandeyuangu，zai10beifangdajingxiaxiangqianzuanshijingdufenwei：lc、vvs、vs、si、pwugejibie。

　　xiangqianzuanshidejingdufenjiyaochongfenkaolvxiangqianbuweiduizuanshineiwaibutezhengdezhedangyingxiang，suoyizhidingdajibufenxiaoji，erduilcjijivvsjidequedingyaobeijiaxizhixiaoxin，yuanzeshangbudinglcji。

　　(3)镶嵌钻石的切工测量与描述

　　duimanzuqiegongceliangdexiangqianzuanshi，caiyong10beifangdajingmucefahuoyiqiceliangfa，celiangtaikuanbi、tingshenbidengbilvyaosu。yibanbilvzhixiejibiefanwei，rutaikuanbi53.0%～66.0%，tingshenbi40.0%～41.o%。duimanzuqiegongceliangdexiangqianzuanshi，caiyong10beifangdajingmucefa，duiyingxiangxiushidudeyaosujiayimiaoshu。tongchangzhimiaoshubijiaoyanzhongdexiushidupiancha。

　　(4)镶嵌钻石的质量

　　zaizuanshixiangqianzhiqian，jiagongchanghuijiangzuanshidezhiliangchengliang，daixiangqianwanchenghou，jiangzuanshidezhiliangzhijiedayinzaishoushidejinshutuoshang。dangaizhiliangzhinengzuoweicankaozhi，chufeijiangzuanshichaixiazhongxinchengliang。duiyuweijiangzuanshizhongliangbiaochude，womenyekeyitongguoceliangzuanshidezhijingyuquanshen，genjugongshijisuanqiudegaizuanshidejinsizhiliang。