国检钻石切工分级定义与标准

一、比率

bilv（yichengzhiweibili）shizhiyipingjunzhijingweibaifenzhibai，qitagebufenxiangduitadebaifenbi。

pingjunzhijing。zhijingshizhizuanshiyaobushuipingmiandezhijing，qizhongzuidazhichengweizuidazhijing，zuixiaozhichengweizuixiaozhijing，erzhedesuanshupingjunzhichengweipingjunzhijing。

bilvzhuyaobaokuoyixiajigebizhi：

• taikuanbi：taimiankuanduxiangduipingjunzhijingdebaifenbi，taikuanbi=taimiankuandu/pingjunzhijing*100%

• guangaobi：guanbugaoduxiangduipingjunzhijingdebaifenbi，guangaobi=guanbugaodu/pingjunzhijing*100%

• yaohoubi：yaobuhouduxiangduipingjunzhijingdebaifenbi，yaohoubi=yaobuhoudu/pingjunzhijing*100%

• tingshenbi：tingbushenduxiangduipingjunzhijingdebaifenbi，tingshenbi=tingbushendu/pingjunzhijing*100%

• dijianbi：dijiandezuidazhijingyupingjunzhijingdebaifenbi，dijianbi=dijianzhijing/pingjunzhijing*100%

• quanshenbi：dijiandaotaimiandechuizhijuliyupingjunzhijingdebaifenbi，quanshenbi=quanshen/pingjunzhijing*100%

haiyoulianggejiaoyeshijiweizhongyaode，tamenshi：

• guanbujiao，guanbuzhukemianyuyaoweisuozaideshuipingmianzhijiandejiajiao

• tingbujiao，tingbuzhukemianyuyaoweisuozaideshuipingmianzhijiandejiajiao

钻石比率分级表

二、修饰度

xiushiduzhiduizuanshipaomogongyidepingjia，jizhizuanshiqiemogongyiyouliechengdu，shipingjiazuanshiqiegongdelingyigezhongyaodefangmian。xiushidutongchangbaokuopaoguangzhiliangheduichengxingpianchalianggefangmiandeneirong。

• paoguangzhiliang：baokuozuanshibiaomiandepaoguangwenheshaohenliangxiang。

• duichengxingpiancha：duichengxingpianchashizhipaoguangzuanshizaiduichengxingfangmianchuxiandewenti。changjianduichengxingpianchawentibaokuo：

①不圆：

congbutongdeweizhiceliang，zuanshiyaobuzhijingbudeng。zuanshiyaoweibuyuanshijiaochangjiandexianxiang，yibanlaishuo，yaoweidezuidazhijinghezuixiaozhijingzhijianxiangchachaoguopingjunzhijingdebaifenzhier，jishiweibuyuan。

②guanbuyutingbukemianjiandianbuqi：

congyaobuguancha，guanbukemiandejiaohuidianyutingbukemiandejiaohuidianbuzaitongyichuizhifangxiangshang。zheizhongpianchashiyouyuzaidamoshangxiazhukemianshi，xuanzhuanjiaodubutongershishang、xiaxiangyingdezhukemianfashengcuowei，jinerdaozhiqitadekemianjiqijiaohuidianfashengcuodong。

③kemianjiandianbugoujianrui：

kemiandelengxianmeiyouzaishidangdeweizhishangjiaohuichengyigedian。zuichangjiandeshiguanbuyutingbuzhukemiandelengxianzaiyaoweichuchengkaifangzhuanghuotiqianbihe，zaochengzheizhongpianchadezhuyaoyuanyinshizaidamokemianshijiaoduzhangwobudang。

④tongmingkemiandaxiaobujundeng：

zaitongyikezuanshishang，tongmingkemiandaxiaobujunyi。qizhongyiguanbukemiandaxiaobujunyijiaoweiyanzhong。

⑤台面倾斜：

zhengchangqingkuangxia，zuanshidetaimianheyaoweisuozaipingmianyingshipingxingde。danruguoqiemoshiwu，huizaochengtaimianheyaopingmianbupingxing，zheilianggepingmianchengyidingdejiajiao，zheizhongpianchashijiaoyanzhongdexiushipiancha，keyingxiangzuanshideliangduhehuocai。

⑥波状腰：

suoweibozhuangyaoshizhiyaoweisuozaidepingmianbushiyigeyutaimianpingxingdepingmian，erchengshangxiabolangqifuzhuang。

bolangyaohuizaochengzuanshide“lingjiexiaoying”。“lingjiexiaoying”shizhiyouyubozhuangyaozaochengtingbujiaodubianhua，zaitingbuxiangduiyingdelianggefangxiangshanglouguang，chuxiandeheianquyu，xingsilingjie。

⑦骨状腰：

yaoweidezuidahouduyouguilvdebianhuahuogengqueqiedeshuoxianglinlianggeyaoweizuidahouduxiangchajiaoda，xingsiyitoucudayitouxixiaogugezhuang。

guzhuangyaohuidaozhidanfanxiaoying，congtaimianguanchazuanshidetingbukemianchuxianminganxiangjiandexianxiang。

⑧锥状腰围：

zhuizhuangyaoweishizhizuanshideyaoweibushiyigeyuanzhuti，ershizhuiti。zhuizhuangyaoweishiyouyuguanbuhuotingbubilibudang，zhuyaoshiguanbuguogaohuotingshenguodashiduizuanshijinxingzhongxinqiegeshizaochengde。

zhisuoyijiangyaoweiqiegechengzhuizhuang，shiweilezuidaxiandudibaochiqiyuanyouzhiliang。zai10beifangdajingxiacongguanbuhuotingbuguanchazuanshidezhuizhuangyaoweichengyige“baisedelunquan”zhuang。

⑨台面偏心：

taimianpianxinshizhitaimianbujuzhong，xiangbianbupianli。taimianpianxinjiangzhijiedaozhitongmingkemiandaxiaobudeng，tongshiyehuiyingxiangtaikuanbidemugu。

⑩底尖偏心：

congcemianguanchazuanshi，dijianbuzaizhongxinduichengdianshang，congtaimianguanchadijianpianlitaimianzhongxindian。

⑪额外刻面：

guidingkemianyiwaidesuoyouduoyudekemiandouchengweiewaikemian。ewaikemianshiyouyuqiegebudangzaochengde，tongchangduochuxianzaiyaobufujindetingbuhuoguanbu。dangewaikemiancongzuanshidetaimianguanchakanbudaoshi，tongchangduiqiqiegongyingxiangbuda，ernengcongguanbuguanchadaodeewaikemianbujinyingxiangzuanshideqiegong，shenzhihuiyingxiangdaozuanshidejingdujibie。

zai10beifangdajingxiajiangxiushidujibiefenwei：henhao、hao、yibansangejibie；

• henhao：jinyoupaoguangwen。

• hao：jinyoupaoguangwen、buyuan，huojinyoubuyuan。

• yiban：chushangshuliangxiang，haiyouqitapiancha。