为什么异型钻石只有2EX？异形钻石切工选购建议

zaizuanshi4czhong，feichangzhongyaodeyige“c”jiushiqiegong（cut）。zuanshiqiegongshijuedingzuanshishanyaodudeguanjian，er3exqiegongshibushaoxiaofeizhegoumaiyuanxingzuanshideshouxuancanshu，dandanggoumaiyixingzuanshishi，zuiduoquezhiyou2ex，zheishiweishenme？

一、标准圆钻的切工

yaozhidaoweishenmeyixingzuanshizhiyou2ex，xuyaoxianlejiebiaozhunyuanzuanxingdeqiegong。tongchangqingkuangxiazuanshiduoqiegeweiyuanmingliangxingqiegong，duiyubiaozhunyuanzuandeqiegongeryan，baokuo：bilv（proportion）、duichengxing（symmetry）hepaoguang（polish）。

genjuzheisanxiangdehaohuai，youfenbiekeyifenweiwugejibie：ex（excellent，jihao）、vg（very good，henhao）、g（good，hao）、f（fair，yiban）、p（poor，cha）。dangbilv、duichengxinghepaoguangsangeweidudoudadaoex，jiqiegongfenjiwei3ex。

giazuanshifenjizhengshu——yuanxingzuanqiegongjibie

3exqiegongdezuanshinenggouzuidachengdushangzhanshichuzuanshidehuocaiheliangdu，yinci3exdeyuanzuanqiegongshixiaofeizhegoumaizuanshishideshouxuan。

二、异形钻石的切工

yixingzuanshishizhichulebiaozhunyuanmingliangxingqiegongyiwaideqitazhuoxingdezuanshi。yubiaozhunyuanzuandeqiegongbuyiyang，yixingqiegongbiaozhunzhiyoulianggeweidu，jiduichengxinghepaoguang。erdangzheiliangxiangdoudadaoexdebiaozhunshi，cishiqiegongfenjiwei2ex。

giazuanshifenjizhengshu——yixingzuanqiegongjibie

weishenmebujichuyixingzuanshidebilvfenji？

shouxianyixingzuanzaizhuoxingshangfenweihenduozhong，bijiaochangjianqiehuanyingdujiaogaodeyoulixing、xinxing、gongzhufang、dianxing、tuoyuanxingdeng。duiyuruguoduibilvjinxingfenjifeichangkunnanqiefansuo

常见异形钻

qici，yixingzuanbuxiangbiaozhunyuanzuanneibangaoduduicheng，qieqiegeshujubiaozhunjiaotongyi，nenggoudechukeyipanduanyouliedejixieshuju。biruyikelixingzuanshi，yourenxihuanpianpangde，yourenxihuanpianshoude，biaozhunhennantongyi。

异形钻长宽比

zuihou，yixingzuandeqiegeyibaozhongweizhu，zaibaochizhengtimeiguandeqingkuangxia，huijinliangbaochigengduozhongliang。zheizhongtedianzaishichangzhonghenmingxiankeyiguanchadao，biruhenduolingrenzantandedakelazuanshi，wangwangdoushiyixingqiege。

三、异形钻石的挑选

jinguanyixingzuanshidebilvmeiyoujichujutidefenji，danshiyibanzhengshushangdouhaishihuijichuzuanshidebilv，duiyuyixingzuanshieryanzhijichutaikuanbihequanshenbiliangxiang。

异形钻切工比例图

congqiegongdejiaodueryan，duiyuyixingzuanshidetiaoxuan，yixingzuandepaoguangjibiezuihaoshiexdengji，yinweipaoguanghuizengjiazuanshideliangdu。duichengxingjibiezuihaoyeshiexdengji，shuomingzheikeyixingzuanqiemodebijiaobiaozhun。

shoubutongzhangkuanbilideyingxiang，youdeyixingzuankanqilaijiubijiaopianaipang，youdekanqilaizepianshouzhang。erduizuanshizhangkuanbideyaoqiu，kecankaoxiabiaozhongbutongzhuoxingdezuanshizhangkuanbili（zhangkuanbishizhizuanshiyaoweizuidazhangduhezuidakuanduzhijiandebi）biaozhun，ranhougenjugerenxihaojinxingxuanze。

bujinyixingzuanqiegongfenjiyubiaozhunyuanzuanbutong，zaitiaoxuanyansedengjishiyeyouyixiebutongzhichu，dajiakeyilianxiwomendezhuanyezhubaoguwen，xiangxilejieyixingzuantiaoxuanyaodian。