HRD钻石证书和GIA钻石证书有什么不同？HRD证书可不可信？

       zaigoumaizuanshihuozhezuanjiedeshihou，yibandouhuifudaizuanshijiandingzhengshu，zuanshijiandingzhengshumingquebiaozhuzuanshidengji，keyizhiguankanchuzuanshidepinzhi，danshizuanshizhengshuduozhongduoyang，qizhongzuichangjiandeshigiazuanshizhengshu，danbufenxiaofeizhezaigoumaideshihoufaxianhaiyouyizhonghrdzhengshu，neimeliangzhongzhengshuxiangbizhixiayouyounaxiebutongni？

       zuanshijiandingzhengshushimeikezuanshideshenfenzheng，biaomingzuanshijiandingdelaiyuanjigouhejiancebiaozhun，womenzuishuxideshigiameiguobaoshixueyuanzuanshizhengshu，giazuanshijiandingzhengshushishijieshangzuiquanweide，yeshiyingyongzuiguangde，hrdzuanshijiandingyeshiyizhongzuanshijiandingjigou。

       HRD钻石证书

       hrdweibilishide“zuanshigaojiecenghuiyi”（hoge raad voor diamant），youguojizuanshilishihui（idc）xieshangzhidinghrdguojixingzuanshifenjibiaozhun，hrdzuanjiejiandingzhongxinjianzhao“idcguize”jinxingjianding。bilishizuanshigaojiecengyihuishiguanfangchengrendaibiaozhebilishizuanshishangmaoxingye。qizongbuzuoluoyushijiezuanshizhongxinanteweipu。

       hrdzuanshizhengshuchumiaoshuzuanshijiezhidewaixing(shape)，chicundaxiao(measu-rements)jizhongliang (weight)zhiwai，tebieduiqiegebizuogengxiangxideceliangbaogao，jizaizaizhengshushang，ruzhuomian(table)、yaoweihoudu(thin)、guanbugaodu(cr. height)jidibushendu（pavilion- depth）。

       zaihrdzhengshuneideshuzijilushang，fugailetoumingwangzhuangjiaozhiyifangzhitugai，neizaihuowaizaitezhizaizhengshuneijibaozhuangzhishangdoutiezhejingduzhitu biaojixiangxijihao。hrdxitongshiyongxianweijingceliangneihanwu，jingdudengjishiceliangjieguoyuhrdjingdufenjibiaobiduiweijichu。dengjidaihaochulc(loupe clean)hepjiwai，yugiaxiangtong。

       HRD证书和GIA证书的区别

       qishi，giashiguojishangzuizaozhidingzuanshi4cdejigou，quanshijiedezuanshijiancebiaozhunyeshigensuigiade4cbiaozhunxiangfuhede，zhishizaixijieshangyousuoqubie，hrdyingyongdezuanshijiandingfanweimeiyougiazheimeguang，jishubiaozhunshanggengiayeyousuochaju，suoyizairichanggoumaizhongbingbuduojian。suoyizaigoumaizuanshideshihou，giazuanshizhengshukezuoweishouxuanjiandingzhengshu。