方形钻石中的两大专利切工：阿斯切 & 弗兰德斯

阿斯切钻石切工Asscher Cut

asiqieqiegong（asscher cut）zuizaoyouhelanzuanshiqiegeshijoseph asscheryu1902nianfaming，liuxingyuzhuangshiyishushiqihediyicishijiedazhanzhihou。

asiqieqiegong（asscher cut）shijiangzumulvqiegongpeihefangxingqiegongerchengdezuanshixingzhuang，juyouxuanlandejietizhuangxiaoguo。

asscherqiegongzuanshijuyou58gekemian，jihuchengbajiaoxing。yuqitaqiegongfangshixiangbi，asscherqiegongnengcongyuanshizhongbaoliugengduodezhongliang。youyubaoshidexingzhuangjikemiandeqiemofangfa，shideasscherqiegejuyouyizhongjingdiandewaixing，xiangjiaoyuxiangsidezumulvqiegongjuyougengjunhengdeliangguang。

1999nian，joseph asscherdesunziedward asscherzhizuochuyikexinde、biyiqiangengcuican、gengjuhuolide asscherqiegongzuanshi。edward asscherzaibaoshidedibuzengjialelianggepaimian，meipaigebagekemian，ershimeipaibianzhai，zailingzuanshidewaiguangengjuhuolidetongshi，baoliuleqizufuyuanshiqiegongdejingdian。jiaoduhebilidezhengquebawoduiasscherqiegongjihuangshiasscherqiegongdemeiganhecuicandujiweizhongyaode。zheizhongqiegongchengzuohuangjiaasscherqiegong。

yuanshiasscherqiegongjihuangshiasscherqiegongzuanshibuguanzaigudongzhubaohaishixinshizhubaoshangdouhenshouhuanying。buguo，huangshiasscherqiegongyongyouguojizhuanli，yejiushishuojinyouxiaofanweideqiemojiaodubeihuangshiasschergongsiyunyongyuqizuanshiqiemoshang。

弗兰德斯钻石切工Flanders Cut

1983nian，yimingyouxiudebaoshigongjiangchuangzaochulefulandesi(flanders)qiegong。zheiyinianmo，anteweipudeyijiaxiaoxingzuanshipaoguanggongchanglvxianshiyonglezheizhongfangshi。

zaifulandesiqiegongzhixia，zuanshibeipaoguangdaowanmeidechengdu，chengweianteweipugongjianggaoshuipingchuangzaolihepaoguangzhuanyejishuderonghe，bingyianteweipusuozaidebilishibeifanglianbangdiqumingming。bujiu，ouzhouzuijushengwangdebaoshijigouhrdrenkelefulandesiqiegong。

fulandesiqiegongzuoweiquanfangxingmingliangqiege，yibafangxingweigainian，you8gejiaohe61gejingzhidefangmian，shizuanshidadaoquanneifanshe。congdingbukan，qiqiekouyoulianggewanmeidezhengfangxing，bicicheng45dujiao。yeyoushaoshu(budao2%)beiqiechengjuxing，shiyong65gekemian，zheizhongqiegeshizai20shiji80niandaihouqiyoubilishizuanshishangzaigaodufuzadejisuanjidebangzhuxiakaifade。

shejizheizhongqiegedemudeshizuidahualiangdu，weilebaozhengqiegechulaideshijuexiaoguo，fulandesiqiegebutaikaolvbaozhong，yinciyuanshisunhaobiyuanxinghaigao。yikejingguofulandesiqiegedezuanshichengpindagaishiyuanshizhongliangde45%，eryuanxingdagaizai47-48%zuoyou。

yuyuanxingmingliangqiegexiangbi，fulandesiqiegexuyaohuafeisanbeideshijian，cainengdadaosuoyoukemianwanmeidingwei，yicibuzhuoguangxian，shizheikezuanshishanyaodexiaoguo。

yishangshiguanyuzuanshideasiqieqiegong（asscher cut）hefulandesiqiegong（flanders cut）dexiangguanjieshao，qizhongasiqieqiegongzaishichangzhonggengweichangjianyixie，tongchangzhiyouwanmeijingdudezuanshicaiyouyongqiqiegeweizheigexingzhuang。