关于钻石国内外证书差异的三个疑问

　　jinjinianlaiwangluodianzishangwudexingqi，zhijieyingxiangdaolechuantongdezhubaoxingye，yegaibianlehenduoxiaofeizhedexiaofeiguan。yuelaiyueduodexiaofeizhexihuanxianqugoumaidaiyougiazhengshudeluozuan，ranhoujizhubaoshidingzhishangzaixiangqianjiagong，zheiyangzhenggejiehunzuanjiedechengbensuanxialaihuibiqushangchangmaichengpinyaoshihuihenduo。dabufendexiaofeizhezailuozuanxiangqianhaohouyouhuiquguoneidejiandingjigouzuoxiangqianzhengshu，yushi，guanyuguojizhengshugiayuguoneijiancezhengshuzhijiandechayiwentijiuaoxianchulaile。

　　疑问1：为什么裸钻的国外证书4C级别和国内证书的级别不同?

　　a：muqianzheigewentihenchangjian，biruyouxieluozuandeguojizhengshushang(giazhengshu)dejingdujibieshi“vvs”，danzaiguojianngtcjiancechudekenengzeshi“vs”;huoshigiazhengshudeyanseshi“f”se，erguojianngtckaichudezezhishi“h”se。

　　henduorenrenweiguojianngtcdejiancebiaozhuntaiyan，shi“zhiqiuzuiyan，buqiuzuizhun”。qishiyuanyinzaiyuguojianngtcnengzuodao“vvs”dezuanshi，shizaishibeifangdajingxiajihumeiyourenhebaoguoticaikeyizuodedao，erwomenshiyongshibeishouchifangdajinglaitiaozuanshi，danguojianngtczaijianceshiyongdeshiershibeiyishangdexianweijinglaikan。zaixiangqianzuanshidefenjiwentishangguojianngtchuiyouhenyangedebiaozhun，ertamendeluozuandefenjizhengshu，shimeiyouzheimeyangede。

　　疑问2：国检NGTC镶嵌钻石的证书为什么会如此严格?

　　a：zheishiyinweizuanshizaixiangqianhouduizuanshijibiedepanduanjiuhuishoudaohenduoyinsudeyingxiang。zhuyaoshizaiyansehejingdufangmian：

　　首先颜色：

　　shishishangzhiyouluozuancainengkeguandejichuzhengquedeyansedengji，zuanshideyansefenjiyouhenduoyangeyaoqiu，luozuanfenjishiyidingshiyaotaimianxiangxiabizuanshizuixianyansedeyaolengchu，erdangzuanshixiangqianhaoshi，taimianshixiangshangde，zheiyangzuanshibenshendehuocaijiuhuihendachengdushangyanshilezuanshidetise，suoyi，zuanshizaitaimianxiangshangdeqingkuangxia，hennanzhunquepanduanzuanshideseji。haiyouyigezhongyaodeyinsushizuanshizaixiangqianhaohou，yanseshihuishoudaozhouweixiangqianjinshudeyanseyingxiang，ruguopangbianpeideshibaisedejinshu，zuanshideyansejiuhuixianbai，ruozhouweishihuangsejinshushi，zuanshideyanseyehuiyingchendefahuangle。suoyi，ruguozuanshizhouweixiangqiandejinshushibaisedeshihou，zheishijiancerenyuanjiuhuiyouyishidebakandaodezuanshideyansedengjijiangdiyixie。

　　yinci，chuxianxiangqianzuanshideyansedengjihuiheyuanlailuoshichuxianpianchadeqingkuang，jiubunanlijiele。

　　其次净度：

　　xiangqianzuanshidejingdushiwufazhunquepanduande。

　　luozuandejingdufenjishiyaozuoguanbu、tingbu、yaobugefangmiandejianchade，erxiangqianzuanshi，zaizuojingdufenjishi，zhinengcongguanbulaiguanchazuanshidejingdu，youxienengjianchayaobu，danyouyukuanshidexianzhi，jihushiwufacongtingbujianchazuanshidejingdude。

　　haiyouyigezhongyaodeyinsushizuanshizaixiangqiandeshihou，yidinghuihejinshujiechu，yejiushishuo，zuanshizaixiangqianhaohou，kendingyoudebufenhuibeizhuazidangzhu，huoshibaoxiangdeshihou，zuanshidewaiquandouhuibeijinshubaowei，zheishi，zuoxiangqianzuanshidejingdujianchadeshihou，zheixiebeijinshudangzhudedifang，shigenbenkanbudaode，ertongjiancharenyuanbukenengbaxiangqianhaodezuanshichaixialai，wanwanquanquandejiancha。

　　yinciduixiangqianzuanshidejingdujiancha，huicunzaihenduodemangdian，huaneryanzhi，ruguoxiangqianzuanshingtcdejingdujibiekaichudeshi“vvs”，yexuluozuangiadejibiedoubuyidingnengdao“vs”。

　　suoyi，xiangqianzuanshidejingdujibiejiuhuiyaoqiudefeichangkekele。

　　疑问3：有GIA的裸钻分级证书的钻石，在国检NGTC检测会降级吗?

　　A：答案当然不是。

　　guojianngtcheqitaguoneidejiancejigouzhisuoyihuichuxianbayixiedaiguojizhengshudezuanshijibiejiangdideqingkuang，bingbushiyinweiguoneidejiancerenyuanzhuanyejinengchahuoshiyinweisongjianrenhejiancejigoumeiyou“guanxi”，jiuhuibayuanlaijibiegoudezuanshiyingyadijibie。guoneidejiancejigoushizaiquedingxiangqianzuanshishiguojizhengshushangdeqingkuangxia，xiangyingdehuicankaoluozuanzhengshushangdejibielaizuochuzijidejibiepanduan。ruguotongyangshizaiguojianngtckailuozuanfenjidezhengshu，jibiekendingbuhuihegiazhengshuyouduodadechuru，danruguoshizuoxiangqianjibie，zheiqueshiduoshaohuiyouyidingchayi，ruguoninzixiyueduleshangmiandejieshao，ninyidinghuimingbaizheigezhongyuanyoude。