实例讲解：GIA证书以及NGTC证书的区别

 　　guoneizuanshishichang，zuiweizhimingdezuanshizhengshuwuyishiguowaidegiazhengshuheguoneidengtczhengshu，yigequanqiurenzhengjiaoquanwei，yigeguoneichujujiaoyanke，giazhengshuyijingtczhengshuyoushenmequbie?nagehao?xiaofeizhewangwangcunciyiwen，fangjianduicidehuidayeshimolengliangke。xiamian，woaizuanshiwangtiaoxuanmuqianguoneizuichangshiyongdegiazhengshuyijingtczhengshuweiduixiang，duitongyikezuanshitongshichujuzheilianggezhengshu，rangnizhiguandikandaotamenzaijibie、miaoshushangdaodiyoushenmebutong。

tongyikezuanshidegiazhengshuhengtczhengshu

　　1、4C数据全部一致

　　0.41kela、gseji、jingdusi1、qiegong3ex，lianggezhengshuduiyurenmenzuikanzhongdezuanshi4cshujujunjichuleyiyangdejibiepanding。

　　2、荧光判定没有差别

　　lianggezhengshujunjichulegaizuanshiwuyingguangdepanding，zheiyidianshangyemeiyourenhezhengyi。

　　3、切工比例有不同

　　zaizuanshigebufendeqiegongbilipingdingshujushang，lianggezuanshizhengshukanchulechabie。lirugiazhengshuduiyutaikuanbidepandingshi57%，erguojianzhengshuduiyutaikuanbidepandingwei56%;zaitingjianbufengiazuochulewudepanbie，guojianzejichule0.4%deshuju;giapingdingdeguanbujiaoduwei35.5du，erguojiandeshujuwei35.2du;zongshendugaobaifenbiyexiangchale0.1%。danzongheerkanzheixieshujuchabiebingbuda，erqieyeduiqiegongjibiedepingdingmeiyourenheyingxiang，jihukeyihulvebuji。

　　4、杂质描述方法不一

　　guanyuzuanshideneihanwurending，lianggezhengshudoujichulefeatheryuzhuangwendemiaoshu，danyouyubencigiachujudeshixiaozhengshu，yincimeiyouduizuanshineihanwujinxingtushibiaoshi，guojianzhengshuzeduiqijinxingleqingxidebiaozhu。zaitushizhongkeyikanchu，zheimeizuanshideneihanwucunzaiyutaimiandebufen，dankeyitongguoxiangqianjinxingzhegai。

　　5、证书标准一目了然

　　lianggezhengshujunbiaozhulegezidefenjibiaozhun，congzhongkeyikandaotamenduiyuzuanshijibiedepingdingbiaozhunjibenyizhi，zhishizaimouxiejibiedechenghushangcunzaixiexuchabie。

　　6、全部都有多重防伪

　　liangkuanzhengshudouyouduozhongguangxue、wenzifangweibiaoshi，bijiaomingxianhejianbiandejianbiefangshishigenjuzhengshubianhaodengluguanwangjinxingchaxun。qizhongguojianzhengshukeyizhijiesaomiaozhengshushangdeerweima，guanyuzuanshideyiqiefenjixinxihuilijizaishoujishangchengxian。ergiazhengshuyeyouerweimadeshezhi，dansaomiaohouhuitiaozhuandaogiaguanwangdechaxunweizhi，haixuyaozhongxinshuruzhengshubianhao，caozuoqilaimafanyixie。

　　7、做证书要花多少钱

　　lianggezhengshudouhuigenjuzuanshidezhongliangbutongjinxingbutongdeshoufei。yizheike0.41keladezuanshiweili，guojianzhengshudeshoufeiwei260yuanrenminbi，giaduiyuzheiyangxiaoyu0.7keladezuanshiyibandoushichujuxiaozhengshu，jiageshi70meiyuan，yuedengyu430yuanrenminbi。

　　8、不能忽略的其他区别

　　giatigongdaxiaoliangzhongzhengshu。xiaozhengshuxinxitongyangqiquanerqiefangbianxiedai，guojianzhengshujiaoda，xiedaiqilaiyouxiekunnan，zaishejishangmeiguanchengdushaoxunyugiazhengshu。

　　tongguozheikezuanshideliangzhongzhengshufaxian，giazhengshuyijingtczhengshudequbiebingbushihenda，zaishujuchujushangyouyidingdetongyixing，xiaofeizhezaixuangouzuanshishi，yekeyiyaoqiuxuangoutongshipeibeizheiliangzhongzhengshudezuanshi，laijinkenengdebaohuzijidequanyi。