GIA4C标准等级鉴定

 　　yitidaozuanshizhengshu，henduorenxiangdaodejiushigia(meiguozhubaoxueyuan)，bujinshiyinweigianiandaizuijiu，bijiaoyougongxinli，gengyinweixiangbiqitazhengshu，giazuodezuanshifenjizhengshuduizuanshidejiancegengweigengxi，neime，giaduizuanshide4cdengjishiruhejiandingde?

　　钻石颜色等级鉴定

　　guangyuanhebeijingduizuanshiwaiguanyoufeichangdadeyingxiang，giacaiyong biseshi，zaibiaozhunhuadeguanchahuanjingzhongjiandingzuanshiyansedengji。giapeibeizhishaoliangmingyansedengjijiandingshifenbieweitongyikezuanshizuojianding。duiyujiandingjieguobuyizhide，huoshiyixiezhonglianghepinzhiteshudezuanshi，giahuiyougengduojiandingshijinxingyansedengjijiance。zhidaojiancejieguoyouchongzudeduandingxing，caihuizuizhongquedingzuanshidedengji。

　　钻石净度等级鉴定

　　zuanshijingdu dengjijiandingcaiyong10beifangdajing zaibiaozhunguancetiaojianxiajinxing。jinxingchujiandedengjijiandingshihuizixijianchazuanshi，quedingzuanshidejingduyijixiushimoguangtezheng，bingcaijiruleishezuankonghuoliexichongtiandengjingduchulidezhengju。

　　zhishaoliangmingdengjijiandingshijiangduizuanshidejingdu、damochengduheduichengxingjinxingjianding，haihuijiangjuedingjingdudeneihanwutezhenghuizhidaoxianshizuanshidexingzhuanghekemianxingshidetushang。

　　钻石切工等级鉴定

　　gia weiyansedengjizaid (wuse)zhiz (danhuanghuodanhese)zhijiandebiaozhunyuanxingzuanshitigongqiegongdengjijianding。weilequeliqiegongdengjijiandingxitong，giajinxingleweiqi15niandezhenduiyuanxingzuanshideguangfanjisuanjijianmo，bingduitianranzuanshijinxingle70,000duocideguancha，yiheshiqiyanjiuchengguo。muqian，gaixitongkeyipingjieqichaoguo3850wanzudebiliyushezhi，duizuanshijinxingqiegongdengjiyuce。

　　gia dezuanshiqiegongdengjihangaicongjiyou (excellent)zhibuliang  (poor)，yongyujiandingzuanshizhengmianchaoshangdezhengtiwaiguan，congeryuceqimingliangdu、huocaiheshanguang(zuanshiyuguangxianhudongchanshengdeguangmang)dengji。

　　gia yehuichayanmeiyikesongjiandezuanshi，quedingqishifouweihechengzuanshi。

　　钻石克拉重量测定

　　giashiyongfeichangjingquededianziweiliangtianpingjinxingchengzhong，cedingzuanshidekelazhongliang，dianziweiliangtianpingkejingquedaoxiaoshudianhouwuwei (jiyikeladewanfenzhiyi)。giahaicaiyongguangxueceliangzhuangzhilaiquedingzuanshidebili、chicunhekemianjiaodu。