【图】钻石裸钻的4C分级鉴定标准详解

　　meiyikezuanshidoushishijian、dadiheziranzaojiudeqiji。meiyikezuanshidouduyiwuer，rutongmeiyipianxuehuadexingtaijiongyiwanqian。

　　zhidao20shijizhongqi，rengweiyoupubianshiyongdezuanshizhiliangpingjibiaozhun。giameiguobaoshiyanjiuyuanshouchuangxianjinyeneigongrendezuanshifenjibiaozhun。giachuanglide4cbiaozhunbaokuo：zhongliang carat ，yanse color ，qiegong cut，jingdu clarity 。zuanshide4cshizuanshiluozuanjiazhidezhuyaojuedingyinsu， jintian，4cbiaozhunyijingbeiguangfanyunyongyushijiegedidezuanshizhiliangrenzhengguocheng。

　　4cbiaozhundechuangli，tongyilequanqiuduizuanshipinzhidehengliang，gengrangxiaofeizhedeyizhunquerenshisuoxuangouzuanshidezhilianghetexing，juyouzhongdayiyi。4cfenjibiaozhunjizuanshiyanse、jingdu、qiegongheyanse，shihengliangzuanshidezhuyaoyinsu，yinci，zuanshi4cfenjishigoumaihuoshitouzizuanshiluozuanbizhidezhubaozhishi。xiamianduizuanshide4cfenjibiaozhunjieshaodehenxiangxihenquanmian，xiwangduidajiayoubangzhu。

　　一、钻石的重量英文Carat：钻石4C分级标准之一

　　zuanshidezhongliang caratshi4czhongzuirongyiduliangdetezheng，yuqitabaoshiyiyang，zuanshidezhongliangyeyongkelalaijiliang。tongdengpinzhidezuanshi，zhongliangyuedayuezhengui。kelayicilaiziyizhongjiaozuo“xiaojiaoshu”zhongzi，youyuzheizhongzhongzidezhongliangjuyoujingrendeyizhixing，yinerzaoqiyonglaichengliangzuanshidezhongliang，yikelajidengyuyilixiaojiaoshuzhongzidezhongliang。xianzaibiaozhunshiyikeladengyu0.2g，meiyikelafenweiyibaifen(huoxiangdangyu200haoke)，yinciyike25fendezuanshizhong0.25kela。igishiyongjingqueduwei0.00001keladedianzitianpingyichengdejingquedezuanshizhongliang，gaizuanshizhongliangjiluzaizuanshijiandingbaogaozhongbingjingquedaoxiaoshudianhouliangwei。

　　zuanshixuanduozhongduodadehao?ruguoninxinzhongyijingyouleyigeyusuan，ninjianghuifaxianzainindeyusuanfanweineiyouyixiliegaopinzhidezuanshigongninxuanze。ruguoduifangfeichanghuoyuehuozhebuxiguanyupeidaizhubao，bingkenengpengzhuanghuosunhuaitadexinjiezhi，ninzuihaokaolvxuanzeyikuanxiaoxinghaodezuanshihuoyigebianyubaohudakezuanshidejietuo。tongshininyeyaojizhu：shouzhidechicunyuexiao,zuanshijianghuikanqilaiyueda。yike1kelazhongzuanshipeidaizai5haoshouzhishangyaobidaizai10haoshouzhishangkanqilaidadeduo。ruguoninyijingzhunbeihaolejietuo，qingquebaoninxuanzedezuanshishihezheigejietuo，ninkeyichakanninxuandezuanshixinghaoshuomingshuhuozhezixunzhubaozixunchuninyingxuyaoshenmexinghaodebaoshi。

　　二、钻石的颜色英文Color ：钻石4C分级标准之二

　　zuanshixiangdangyuyigelengzhu，takeyibaguangxianfenchengyigewuyanliusedeguangbingqienenggoujiangzheixieguangfanshechuquxingchengduocaishanguang，jiuruwomentouguoyouseyanjing，zuanshideyansejiangchongdangyigelvguangqi。congerjianshaofansheguangdeyichu。zuanshideyanseyueqian,shanguangdeyanseyueqiang。sejijiuyuegao。

　　dji：wanquanwuse。zuigaoseji，jiqixiyou

　　eji：wuse。jinjinzhiyoubaoshijiandingzhuanjianenggoujiancedaoweiliangyanse。shifeichangxiyoudezuanshi

　　fji：wuse。shaoliangdeyansezhiyouzhubaozhuanjiakeyijiancedao，danshirengranbeirenweishiwuseji。shuyugaopinzhizuanshi。

　　g—h ji：jiejinwuse。danghejiaogaosejizuanshibijiaoshi，youqingweideyanse。danshizheizhongsejidezuanshirengranyongyouhengaodejiazhi。

　　i—j ji：jiejinwuse。kejiancedaoqingweideyanse。jiazhijiaogao。

　　k—m ji： yansejiaoshen，huocaicha，suoyiwomenbutigong，yejianyikehubushiyong。

　　n—z ji：yansejiaoshen，huocaicha，suoyiwomenbutigong，yejianyikehubushiyong。

　　zuanshideyingguangfenweiqiangzhongruowusigedengji，chengseyuehaodeyingguangyueruo。

　　三、钻石的切工英文Cut：钻石4C分级标准之三

　　钻石价值衡量的4c标准中，唯有车工是直接受人为影响。虽然钻石可以加工成各种各样的不同形状(花式)，以满足不同品味，但是车工的优异程度直接影响钻石得出火、闪光。没有加工的钻石毫无光泽，只有经过训练有素的师傅精确无误的设计,巧夺天工的雕琢，才能揭开钻石的面纱，使之充分利用光的性质呈现彩虹般的“火彩”，并具有闪烁特点。车工的基本形式包括：圆型、梨型、心型、祖母绿型、公主型、橄榄型、椭圆型等（钻石形状分类）。shijishangzuanshiqiegongdengjiqujueyuqikemianyuguangxiandexianghuzuoyongjieguo。

　　congyuanshidaochengpinzuanshi，xuyaofuzadegongxuhejingzhandeqiegejiyi。zhiyoujingguojingxindiaozhuodeqiemobilv、duichengxinghedamopaoguang，cainengwanmeizhanxianzuanshiduyoudecuicanguangmang。qiegongduiyuzuanshidewaiguanhejiazhizhiguanzhongyao，bingqieshi4cbiaozhunzhongzuifuza、jishuyaoqiuzuigaodejiandingbiaozhun。weilequedingyikebiaozhunyuanxingmingliangshizuanshideqiegongdengji(zuanshishoushishangzuichangjiandexingzhuang)，giahuijisuanchugegekemiandebili, zheixiebilihuiyingxiangzuanshizhengmianchaoshangdewaiguan。youci，giakeyijiandingmeiyikezuanshizaiguangxianyukemianxianghuzuoyongxiaxingchengcuicandeshijuexiaoguodechengdu：

　　mingliangdu：youzuanshineibujiwaibufanshechulaidebaiguang

　　huocai：baiguangbeifenxichengqicaideguangpuse

　　shanguang：yikezuanshisuochanshengshanshuoduheyouyuguangxianfanshesuozaochengdezuanshineibuminganquyudexingshi。

　　此外，GIA的切工等级鉴定还包括了对钻石与直径的相对比例、腰围厚度(可影响钻石的耐久性)、刻面的对称性和各刻面的抛光质量等钻石设计和切割技术的评鉴，钻石的各个部位的图解qianmianwoaizuanshiwangyiweidajiazuolexiangxijieshao，zheilibuzaiyiyizhuishu。

　　giaduid-zyansebiaozhunyuanxingzuanshideqiegongpingdingbaohan5gedengji：jiyou(execellent)、youliang(very good)、lianghao(good)、shangke(fair)、buliang(poor)。

　　四、钻石的净度英文Clarity ：钻石4C分级标准之四

　　dangzhushizuanshishi，youkenenghuikanjian「xiaci」huo「neihanwu」- tongchangsuizhejingtizuchenghuoniuqushierxingcheng。jingdudaibiaozuanshidetoumingchengdu，zhuyaoshicongtadetiji、weizhiheneihanwudeshuliangyuxiacilaipingji。baoshixuejiazaijianshizuanshishi，huishiyong 10 beifangdajingheyiju g.i.a.「meiguobaoshixuehui」debiaozhunlaijiandingzuanshijingdude 11 gedengji。congwanmeiwuxia (fl) kaishi，jizhizuanshineizaihebiaomianjunwuxiaci，ranhoushunxudaozuididexiaciji (i3)，xingrongdanyirouyanyinengfaxianshineideneihanwuyuxiaci。

　　1.flzhizai10beibaoshifangdajingxiaguanchazuanshijiejing，jibaoshineibuhewaibujunbujianneihanwu

　　2.ifzhizai10beibaoshifangdajingxiaguanchazuanshineibuwurenhexiaci，danbiaomianhuoxuyouyidiandianxiaci，zhongxinpaoguangjikechuqu。

　　3.vvszhizai10beibaoshifangdajingxiaguanchazuanshikejiandaotingbuhuobiaomianyoujixiaodexiaci。vvs1hevvs2dequbieshihouzheyoujiweixiaodemianzhuangdianhexiaomaochadeng。

　　4.vszhizai10beibaoshifangdajingxiaguanchazuanshikejianfeichangweixiaodexiaci。 vs1hevs2dequbiezaiyuhouzhekenengyouweixiaodemianzhuangdianhuoxiaomaocha。

　　5.sizhizai10beibaoshifangdajingxiaguanchazuanshihenrongyijiandaoxiaci，danrouyankanbujian。

　　6.i1、i2、i3zhizai10beibaoshifangdajingxiaguanchazuanshiyiyujiandaoxiaoxiaci，rouyanganggangnenggoukanjiandaorouyanyijian，gebieyoumingxiandejieliheliexi。

　　7.suoyouzuanshidoushiyong10beifangdajingguanchajingdu，zhiyoui3jikeyongrouyanhaobufeilidikanchuxiaci。

　　jihusuoyoudezuanshidouhuoduohuoshaohanyouxiweidezazhihuoyixieshengzhangdewenxian，chengwei“baoguoti”huo“neihanwu”，youyushitianranxingchengdewuzhi，zuanshihuixianluchusuoyoujiejingguochengdetezheng，qizhongbaokuojiejingguochengzhonghuishenruleshaoxuqitatezhi，shizuanshineimianhuichuxianheidianhuobaidian，tamenshizuanshixingchengdetianranyinji。zuanshideneihanwuhebiaomiantezhengtongchangdoufeichangweixiao，zhiyouzhuanyedezuanshijiandingshicainengkandao。rouyankanshangqu，vs1jizuanshihesi2jizuanshikenengwanquanyiyang， danqipinzhihejiazhiquexiangchajida。yinci，zhuanyejingzhundejingdujiandingfeichangzhongyao。youyumeiyikezuanshizhongbaotidexingzhi、chengfen、weizhi、daxiaodoubutong，zheishidemeikezuanshidoujuyouduyiwuerdetedian，erzuanshidejingdujiushigenjuzuanshidezazhi、chengfen、weizhi、daxiaolaipingjiade。tongchangzuanshizhongdebaotiyueshao、yuexiao，zuanshijiuyuegui。youyuhennanzhaodaoyikequanwuxiadezuanshi，suoyiyuejiejinwuxiadeqijiazhijiuyuegao。