小白选钻福音——怎样从钻石证书数据选择钻石?

　　womenzaigoumaizuanshishidouhuidedaoyizhangjiandingzhengshu，neimeruhecongzhengshuxinxilaipanduanduizuanshizuojiandingdejigoushifouquanwei?zhengshuzhongzhongzhongfuzadezhibiaojiujingshiruhetixianzaizuanshidezhiguanbiaoxianshangni?

　　zuanshifenjiyou4gejibenzhibiao——jingdu、zhongliang、yanseheqiegong，jichuanshuozhongde4c，xiangxinhenduogoumaiguozuanshiderendoucongmaifangkouzhongtingshuoguo。qizhongzuinengzhiguanguanchadaodebianshiyanseheqiegong。

　　颜色

    钻石的颜色分级按照从白到黄白判定，越白越优。其中，最白的等级标识为为D色，最发黄为Z色(一般低过N色就直接标注<N)。作为普通消费者难以精确定级，但可以从字母判断级别高低，一般G色或G色以上就是比较白的，H色作为黄白中间点，I色已经有不明显的黄色调，J色开始黄色调就渐渐明显。这种颜色差异在两颗钻石对比观察时格外明显。

　　zhidezhuyideshi，ruguoyansegaoyugse，jiudegewaizhuyiguancha&ldquo;yingguang”zheixiangzhibiao，qifenweiqiang、zhong、ruohewusixiang，ruguowu，zezuihao;ruguoruo，shangkejieshou;ruoshizhongshenzhishiqiang，zexuyaoquanheng，yinweigaosejidezuanshiyouyingguangshihuixiandewumengmengde，toumingduhehuocaidouhuijiangdi。

　　切工

　　qiegongfenjifenweiduichengdu、paoguangduhezongpingsanxiang，gefenweiwugedengji，conggaodaodifenbieshiex、vg、g、fhep，yibanvgyixiajiuzhidekaolvle。ruguosangeqiegongpingjiadoushi“ex”(excellent，wanmei，3xiangquanwanmeizejiancheng3ex)，neimezheikezuanshiqiegongjiushizuihaode。zhiguantixianweicongtaimian(zuidademian，zaidingshang)guanchashiqiangliedecaisefanguang(sucheng“huocai”)。huocaizhengshizuanshijiazhidezhongyaotixian，shixiangnizhongjinmaikezuanshi，gangchushangchangjiufaxiantahaiburulubianyitanshuishangdeyoushanyao，neishihezhongbeiju。

　　切工不好的钻石主要有如下两个直观体现：

　　1.“yancongguan”&mdash;—dangzuanshitaimianguoxiao，tingshen(xiabanbudegao)guodashi，guanghuizaijingguoyicizheshehouconglingyiduandetingbuyichu，congerxiandeandanwuguang，suoyiqiyoujiaoheidixiaoying。jubukaoputongji，zheizhongxianxiangdezuanshizhanzhenggezuanshishichang9chengzuoyou。

　　2.“yuyanxiaoying&rdquo;——dangzuanshitaimianguoda，tingbuguoqian，kansibijiaoxianda，keguangxianweijingzheshejiuyijingzhijiecongzuanshitingbulouchu，tongyangyingxiang“huocai”。jubukaoputongji，zhongxianxiangdezuanshizhanzhenggezuanshishichang0.5chengzuoyou。

　　qishizhiyaorenzhenhuashijianqiege，zuodao3exhaishibunande，danyouyuliyiqudong，taixiaodehuoqitajibiejiaodidezuanshiruohaofeijiaogaoshijianqiegezetigaolerenlichengben。suoyi，yaomaiqiegongwanmeijinsikekedezuanshi，nidasizuanshishang，tayebuhuitaibianyimaijini。

　　qiegongfenjizhishiyongyubiaozhunyuanzuanxingqiege，ruguoyudaolingleideqiegefa，zebixuyonggengzhuguandeyanguangqupingpan。