GIA等级鉴定与证书

　　giashimeiguozhubaoxueyuandedejiancheng(gemological institute of america)，tachuanglibingtichuleguojifenjitixi。1931nianzailuoshanjichengli，xueyuanzaizuanshifenjihebaoshijiandingfangmianweishijiesuoxinlai，you70duoniandelishi，quanqiudiyitaodezuanshifenjizhidujiushigiazhidingde，erqiequanqiudaduoshubaokuozhongguozuanshibiaozhundoushicanzhaogiazuanshifenjibiaozhunjinxingzhiding， zuoweiyijiadulidefeiyinglixingzuzhi，shimuqianquanqiuzuiquanweidezuanshijiandingjigou。

　　giabujinshimeiguodiyisuobaoshixuexiao，tongshiyeshiquanqiuzhubaoyejiezuijuguimo、zuishoutuichong，yezuibeirentongdezhubaozuanshijiandingjigou。giaguojizhengshudezuanshizaiguojifanweineidoubeirenke，jiageyizhiwenzhongyousheng，wulunshijiehunyong、touzihuozuochuanjiabao，doushishangjiaxuanze!giameiguobaoshixueyuanzi2006nianqi，zaiquanqiufanweineizhengshituichugiazuanshijiandingzhengshuwangshangchaxunxitong。gaixitongdetuichu，duiyujiandingzhengshudechaxunhefangweiqidaolejidadezuoyong。

　　钻石等级鉴定的创立

　　zaigiameiguobaoshiyanjiuyuanchuangli4cbiaozhunheguojizuanshifenjixitong™zhiqian，bingmeiyoutongyidezuanshimiaoshufangshihepinzhijiandingfangfa。zaisishizhiwushiniandai，giatongguosandalichengbeishijian，zuizhonggaibianlezuanshijiaoyidefangshi，weizuanshixingyechuanglitongyongdegoutongfangshi。giachuanglide4cbiaozhunheguojizuanshifenjixitong™weizuanshipinzhidemiaoshutigongletongyidefangshi，zhidinglezuanshidengjijiandingbiaozhunyuzuijiashijianfangfa。

　　congchujudiyifengiazuanshijiandingzhengshu，daojingquejiludengjijiandingjieguo，giayizhiweixiaofeizhetigongzhuanyekekaodezuanshipinzhixinxi。qijin，giadejidachuangjuzaoyiweishirensuojieshou，suochuanglidebiaozhungengbeipubianyingyongyushijiegegejiaoluo，shenzhikeshuoshimeikezuanshizhishang。

　　giazuanshijiandingzhengshuzhongbaokuolezuanshixingzhuang、jingdu、yanse、qiegong、kelazhongliang、bilihexiushidekexuejiandingxinxi，bingduisuoyoujingguochulidezuanshizuochuxiangguanshuoming。jinguanshichangshangyeyouqitajigoutigongxiangguandejiandingbaogao，giashizhongshiyejiegongrendebiaozhunchuanglizhehejingque、juchengxindezuanshidengjijiandingxinxilaiyuan。

　　giazuanshijiandingjingjianbanzhengshu, gumingsiyi，shigiazuanshijiandingzhengshu®dejingjianbanben，shiyongyuzhongliangzai0.15zhi1.99kelazhijiandezuanshi。jiyuewaideanquankaolv，giahaitigongzaizuanshiyaobuleishekezi dexuanzexingfuwu，yibiaomingzuanshijiandingzhengshudebianhao(jingjianbanzhengshuyidingbaohanleishekezi)，shenzhikezaizuanshishangkexiegerenxinxi、riqi、wenzihefuhao，congershizuanshigengjutesebingrongyibianren。

　　GIA钻石等级证书

　　gia zuanshifenjibaogaohe gia zuanshichulibeirenweishishijiediyidebaoshizhengshu。gezhongxingzhuanghedaxiaodezuanshicongshijiegegejiaoluosongdaoxueyuanjinxingfenxifenji。

　　zuanshizhengshubianhao(laboratory report)：gaizuanshidejiandingzhengshubianhao

　　riqi(date)：gaizuanshibeijiandingriqi

　　zuanshixingzhuangheqiegongkuanshi(shape and cut )：zhuyaomiaoshuzuanshidexingzhuangheqiegongkuanshi

　　zuanshichicun(measurements)：yihaomiweidanweidezuanshichicundaxiao

　　kelazhongliang(weight )：miaoshuzuanshijinsidaobaifenzhiyidekelazhongliang

　　quanshenbi(total depth)：xiangduiyuzhijinglaishuozuanshi(yuanzuanhuoyixingzuan)gaodudebili

　　taikuanbi(table width)：xiangduiyuzhijinglaishuozuanshi(yuanzuanhuoyixingzuan)taimiandebili

　　guangaobi(crown height)：xiangduiyuzhijinglaishuozuanshi(yuanzuanhuoyixingzuan)guanbudebili

　　tingshenbi(pavilion depth)：xiangduiyuzhijinglaishuozuanshi(yuanzuanhuoyixingzuan)tingbudebili

　　duichengxing(symmetry)：zuanshideduichengxingdedengji

　　yaoleng(girdle thickness )： zuanshiyaolengdehoudu

　　dijian(culet)：dijianzhuomiandewaiguan

　　paoguang(polish)：zuanshidepaoguangdedengji

　　jingdu(clarity grade)： zai10beifangdajingxiazuanshidejingdufenji

　　jingdujiegoutu：yifuzaifangdajingxiaguanchadaodezhanshitu，tamiaoshulezuanshidexingzhuangyijineihanwudetezhengheweizhi

　　yanse(color grade)：zuanshideyansefenji

　　yingguang(fluorescence)：zaiziwaixianguangzhaoshexia，zuanshifachudekejianguang

　　zhushi(comments)：duibaogaozhongmeiyoutidaodezuanshiqitatexingdemiaoshu