钻石颜色净度分级GIA、AGS和HRD三证书对照

　　买钻石看等级离不开钻石证书，在国际上较为钻石权威鉴定证书yougia、igihehrd，youtamenchujudezhengshuzhanshichangdejuedafene，binghuohuanshangquanshijiedeguangfanrenke。gia、agshehrdnagegengquanwei?zheisanjiazuanshizhengshujiandingjigoudequanweixingdouwukezhiyi，guojizuanshidengjipingzhibiaozhunshiyouzheisanjiagongtongweixide。meigezuanshizhengshudouyoutadeyouliedian，tongshiyoutadeshiyongchu，tamendezhuyaodequbiezaiyuduizuanshideyansehejingdupingjifangmian，xiamianwoaizuanshiwangweidajiazhuyijiexi。

　　GIA：giameiguobaoshixueyuan (gemological institute of america) shibazuanshijiandingzhengshutuiguangchengweiguojihuadechuangshizhe。tashizaigongyuan1931nianyoumr. robert shipleysuochuangli，zhijinyiyoujiangjin70jiniandelishi，giashifeiyinglijigou，jingfeiyouzhubaoyejierenshijuanxian，yinweigiabushejiyinglishiye，zaimingyudiyideqiantizhixia，buhuiyinrenweiyinsuyingxiangjiandingjieguo、suoyizaijiandingshuneirongpinzhifangmian，jijugongxinli。tabujinshimeiguodiyisuobaoshixuexiao，tongshiyeshiquanqiuzhubaoyejiezuijuguimo、zuishoutuichong，yezuibeirentongdezhubaozuanshijiandingjigou。giaguojizhengshudezuanshizaiguojifanweineidoubeirenke，jiageyizhiwenzhongyousheng，wulunshijiehunyong、touzihuozuochuanjiabao，doushishangjiaxuanze!giameiguobaoshixueyuanzi2006nianqi，zaiquanqiufanweineizhengshituichugiazuanshijiandingzhengshuwangshangchaxunxitong。gaixitongdetuichu，duiyujiandingzhengshudechaxunhefangweiqidaolejidadezuoyong。

　　AGS：american gem society (meiguobaoshixiehui)chengliyu1934nian，tadechuangbanrenshirobert m. shipley。zaizaoqide1990 nianchu，agsjizhiliyufazhanzuanshidefenjizhidu，tayuqitajiandingzhiduzuidadebutongdian，jiushitachulezhongliang(carat weight)yiwai，agsbazuanshidechegong(cut)yanse(color)jingdu(clarity)fenji，congzuijiade0daozuichade10，fenchengshigedengjichucizhiwai，agszuanshifenjizhidugengjiangzuanshide4czhongzuizhongyaodechegong(cut) gongshihua，jinerjiangzuanshidechegongdairuxindelicheng。

　　HRD： hrd(hoge raad voor diamant)shibilishi“zuanshigaojiecenghuiyi”，hrdzhengshuzhuyaoyizuanshidewaixing(shape)，chicundaxiao(measurements)hezhongliang(weight)weizhuyaoshujujinxingyangeceliangwai，haitebieduiqiegebilvzuolegengxiangxideceliangbaogao。zaihrdzhengshushangdeshuzijilu，fugaileyicengtoumingwangzhuangjiaozhiyifangzhitugai，xitongshiyongxianweijingceliangneihanwu、jingdudengjideng，celiangjieguoyuhrdjingdufenjibiaojinxingduibiweijichuzuihouquedingdengji，dengjidaihaochulc(loupe clean)hepjiwai，yugiaxiangtong。

　　gia、ags、hrdzuanshizhengshujingduduizhaobiao

　　gia、ags、hrdzuanshizhengshuyanseduizhaobiao

　　yishangjiushi“zuanshiyansejingdufenjigia、agshehrdsanzhengshuduizhao”，maizuanshixuannazhongzhengshuhao?qishi，xuanzezhengshushiyeyouxieqiaomen，giabuhuizuozuanshixiangqianshoushidezhengshu;agsduizuanshichegongjingdufenjibijiaojingxi，hrdyansehejingdubawodoubijiaojingzhundeng。zheixiexiaofeizhedouxuyaoduojiazhuyi，danshizhidedeshi，zuanshizhengshudefujiajiazhihuifujiadaozuanshidejiagezhong，dajiakeyigenjuzijixuyaoyaoqiushangjiajinxingchuju。