最权威的五种钻石证书之最

　　youyuzuanshideteshujiazhi，dajiaduitazuijibendeyaoqiujiushihuozhenjiashi。ruobukaolvzuanshijiageyinsu，zaigoumaizuanshishi，zuirangrenmenfeixindewentijiushi：zuanshidezhenjiahezhiliangyoulie，xiamianjieheshichangshijiqingkuangyijiwoaizuanshiwangdejingyan，jieshaozuiquanweide5zhongzuanshizhengshu，pandianzheiwuzhongzuanshizhengshuzhizui。

　　一、应用最广泛，最具知名度的国际钻石等级证书–GIA钻石等级证书

　　giashimeiguozhubaoxueyuandedejiancheng(gemological institute of america)，tachuanglibingtichuleguojifenjitixi。1931nianzailuoshanjichengli，you70duoniandelishi，xueyuanzaizuanshifenjihebaoshijiandingfangmianweishijiesuoxinlai，quanqiudiyitaodezuanshifenjizhidujiushigiazhidingde，erqiequanqiudaduoshubaokuozhongguozuanshibiaozhundoushicanzhaogiazuanshifenjibiaozhunjinxingzhiding， zuoweiyijiadulidefeiyinglixingzuzhi，shimuqianquanqiuzuiquanweidezuanshijiandingjigou,gia zuanshifenjibaogaohe gia zuanshichulibeirenweishishijiezhumingdebaoshizhengshu。gezhongxingzhuanghedaxiaodezuanshicongshijiegegejiaoluosongdaoxueyuanjinxingfenxifenji。90niandaihou，giazhengshuyesuidaliangyongrudemeiguozuanshijinrulezhongguoshichang，chengweileguoneirenzhidujiaogaodeguojizhengshu。jingguozuanshishichang20duoniandegaosufazhan，shishizhengming，giazhengshuyichengweiguoneizhimingduzuigaodezuanshizhengshu。

　　二、最专业、最具个性化的国际钻石等级证书—IGI钻石等级证书

　　igizuanshizhengshuyouguojibaoshixueyuanqiandingfaxing。guojibaoshixueyuanchengliyu1975nian，zuoluoyuanteweipu，shishijieshangzuigulaodebaoshixueyuan，shimuqianshijieshangzuidadedulizhubaoshoushijiandingshiyanshi，zaiquanqiugedazuanshijiaoyizhongxingongsheyou15geshiyanshi，beichengwei“xiaofeizheshenbiandequanweijiandingsuo”，qizuanshizhengshudequanweixingdedaoshijiegongren。igizuanshibaogaocongbenzhishanglaishuoshiyifenshengming，tajiezhushijiegongrendetixilaizhengmingzuanshidezhenshixing，tigongkekaozhengquedezuanshishenfenhejibie。

　　zuoweishijiesandaquanweijiandingjigouzhongzhenzhengyiyishangweiyidekuadazhouquanqiuxingshiyanshi，igijiejuelegegeshiyanshibiaozhungaodutongyidewenti，qiyizhiyilaidewendingxingshoudaoyejiedeguangfantuichong，lingwai，meizhangzhengshuyanyongleshechipindeshougongzhizuochengxu，weideshibaozhenggefangmianpinzhidouyuzhubaoxiangpipei。zhumingdemont blanc, cartier，escadadengguojipinpaidouxuanzeigitigongjiandinghuopeixunfuwu。 zhidezhuyideshi，ruguoyaogoumaiyike“baxinbajian”dezuanshi，yidingyaoxuanzeigizuanshizhengshu，yinweimuqianzhiyouigikeyichujushijietuichongdebaxinbajianzuanshizhengshu。

　　三、最全面、最安全的国际钻石等级证书—HRD钻石证书

　　hrdzuanshizhengshuyouhoge raadvoor diamant，jibilishizuanshigaojiecenghuiyifaxing，keyizheimeshuo，hrd zuanshizhengshushimuqianzuiquanmianheanquandezuanshizhengshu。taduinindezuanshide4cdengjijinxinglexiangxidemiaoshu，chumiaoshuzuanshidewaixing(shape)，chicundaxiao(measurements)jizhongliang(weight)zhiwai，tebieduiqiegebilvzuogengxiangxideceliangbaogao，ruzhuomian(table)、yaoweihoudu(thin)、guanbugaodu(cr. height)jidibushendu(pavilion depth)。zaihrdzhengshuneideshuzijilushang，neizaihuowaizaitezhengzaizhengshuneijibaozhuangzhishangdoutiezhejingduzhitubiaojixiangxijihao。

　　keyishuo，ruguoxuyaosuogoumaizuanshidexiangxiqingkuang，zehrdzuanshizhengshushizuiweiheshide。zhengshiyinweiqizhengshuneirongxiangxi，yijianquan，yincizaiouzhou，hrdzuanshizhengshushizuishouhuanyingde，yuanchaoguogiazuanshizhengshu。

　　四、国内最权威的钻石等级证书—NGTC钻石证书

　　ngtczuanshizhengshuyouguojiazhubaoyushizhiliangjiandujianyanzhongxinchuju，shiyouguojiayouguanzhuguanbumenyifashouquandeguojiajizhubaoyushizhuanyezhijianjigou，shizhongguozhubaoyushijiancefangmiandequanwei。qishiyongdezuanshifenjixitongyeyanyongguojiguanlianzhaozuanshideqiegong、yanse、jingduyicipailiedengji。ngtctongshiyeshimeiguobaoshixueyuan(gia)zaizhongguodaluweiyidehezuohuoban。

　　ngtczuanshizhengshuzaishichangshangyouxiangdanggaodequanweixing，shenzhibigiazuanshizhengshudebiaozhungengyange，youshihuichuxianyixie“diaoji”deqingkuang，jutibiaoxianzai：

　　1. 钻石颜色：

　　giazhengshuese，ngtcyoushijiandingchengfgse

　　giazhengshugse，ngtcyoushijiandingchenghse

　　giazhengshuhse，ngtcyoushijiandingchengijse

　　2. 钻石净度：

　　giazhengshuif，ngtcyoushijiandingchengvvs

　　giazhengshuvvs2，ngtcyoushijiandingchengvs

　　giazhengshuvs2，ngtcyoushijiandingchengsi

　　youyuzaiguoneizuozuanshijiandingbizaiguowaijigouhuifangbianyixie，qientgcdezhengshujuquanweixing，yinciruoxuxuanzeguoneijigouzuozuanshijiandingdehua，zengtcweishouxuan。danyouyidianyaozhuyi，yibanqingkuangxia，ngtczhizaiguoneijuquanweixing，zaiguowaikenenghuibubeirenke。

　　五、最重视切工的钻石等级证书—AGS钻石证书

　　agszuanshizhengshuyoumeiguobaoshixiehui(american gem society )kaiju。tayuqitajiandingzhiduzuidadebutongdian，jiushitachulezhongliang(carat weight)yiwai，agsbazuanshidechegong(cut)yanse(color)jingdu(clarity)fenji，congzuijiade0daozuichade10， fenchengshigedengjichucizhiwai，agszuanshifenjizhidugengjiangzuanshide4czhongzuizhongyaodechegong(cut) gongshihua，jinerjiangzuanshidechegongdairuxindelicheng。biru：agszuanshizhengshuzhongchegongdengjiwei0dezuanshishizuanshichegongjizhidebiaozheng，ruguoyousange0，jibiaoshigaizuanshibili(proportions)，paoguang(polish)jiduicheng(symmetry)junshiwanmei，shizuanshichegongdewanmeizhijixian!

　　yinci，ruguozhongshizuanshidewaizaibiaoxian，biru“shanbushan”，“huocaidabuda”，zeagszuanshizhengshugengnengduiqiyouxiangxierzhunquedepingjia。wanmeizuanshiyerenwei，zuoweishipindezuanshi，qiqiegongshi4czhongzuizhongyaodeyigeyinsu。

　　yishangzhishiwoaizuanshiwangjingguozhangqiguanchayushichangshijiansuozongjiechulaidezuiquanweidewuzhongzuanshizhengshu，danbingbudaibiaoqitazuanshizhengshubuquanwei，qishi，zhiyaosuomaizuanshiyouyixiarenyiyizuanshizhengshu，zejiubuyongdanxinqizhiliangwenti。