那些影响钻石好坏的GIA钻石证书细节

yaoxianggengquanmiandilejiezuanshi，chulekangiazhengshushangdeyansejibie、jingdujibie、qiegongjibie、yingguangjibie，haiyaozhezhongkanyixiajigerongyibeihulvediaodexinxi：

1、钻石尺寸规格

giazhengshuzhongzuanshichicundemiaoshuwei：zuixiaozhijing*zuidazhijing*gao。

biaozhunzhengyuanxingzuanshidezuixiaozhijinggenzuidazhijingyinggaishixiangdengde，xiangyaozuanshixingzhuangkanqilaigengwanmei，keyiguanzhuyixiazuixiaozhijing、zuidazhijinglianggeshujuyoumeiyouchaoguo0.05mm，lianggeshujudechazhizhiyaobuchaoguo0.05mmdounengjieshou，chajuyuexiaoyuehao。

birushangtuzhengshuzhongdezuanshichicun：6.38*6.42*3.98mm，congzheigeshujukanzheikezuanshihaisuanbijiaozhengyuan。

haikeyicanzhaokelazhonggenzhijingdeguanxi，1kelabiaozhunzhijingzai6.50mmzuoyou，yuejiejinzheigebiaozhunzhijingshuzhiyuehao。（ruxiatu）

2、GIA钻石证书备注

zheigexinxizhuyaokanzuanshishibushichuliguode。

jingguochulidezuanshi，huizaigiazhengshude“beizhu”zheiyilanyoumingquebiaoshu，ruxiatu：

beizhushangyouduizheikezuanshidebuchongshuoming，biruzuanshideyixiejiandingxijie。zuanshishifoujingguochuli，zijichulifangshideng。

3、钻石比例数据图

zaigiazhengshushang，keyikandaozheikezuanshideqiegebilishuju，birutaikuanbi、yaohoubi、tingshenbi、guanjiaodengdeng。

dangzuanshidadaoyidingdeqiegeshujufanweishi，jibenkehuafendaoduiyingdeqiegongdengji：

danqishi，zaimouyiqiegongjibiedeqiegebilifanweinei，haikeyijinyibuyanxuan。liruexqiegongjibiedetaikuanbifanweishi52%-62%，yejiushishuozuanshitaikuanbiwei52%，yehuafenzhilixiangqiegong（ex），danzheizhongqiegongdengjiwangwangshi“cabianhuo”，jibiegao，danbuhuitebieyouxiu。

ruguoduizuanshihuocaigenliangdubiaoxianyaoqiubijiaoyange，keyijinyibutiaoxuanexfanweiliqiegongbilishujugenghaodezuanshi：

• 台宽比：57%~60%
• 全深比：59%-62%
• 冠角：最标准34.5°，允许浮动1°，刻在33.5°~35.5°
• 亭角：40.5°-41°
• 冠高比：15%-15.5%
• 亭深比：42.5%-43.5%
• 腰厚：3.5~4.0
• 下腰面长度比：75%
• 星刻面长度比：50%-55%
• 㡳尖：none

4、钻石素描图

tongguozhengshushangdesumiaotu，keyikanyingxiangzuanshijingdudezhuyaobaoguotizainageweizhi，mingxianbumingxian。（zheigesumiantutongchangzhiyougiadazhengshucaiyou，yikakelayishangdezuanshidoushidaigiadazhengshu）

yingxiangjingdudexiacizuihaobuyaozaitaimianzhengxiafang，fouzekenengjiuhuiyingxiangmeiguan，shibeifangdajinghenrongyikandao。suoyizuanshineibuxiacijinliangzaibuxianyandedifang，birukaojinyaolengdeweizhi。

zaitiaoxuanzuanshishi，ruguoliangkezuanshijibieyizhi，qizhongyikezuanshidezhuyaoxiacizaitaimianzhengxiafang，erlingwaiyikezhuyaoxiacizaibuxianyandedifang，jiushouxuandierkezuanshi。

yishangweidajiafenxiangleyixiegiazuanshizhengshudexijiexinxi，dajiazaigoumaizuanshishi，keyiguanzhuyixia。gengduoguanzhuzuanshixuangoufangmiandexinxi，kelianxiwoaizuanshiwangzhuanyekefuguwen。