国家标准钻石切工比例

biaozhundezuanshiqiegongbilikeyilingzuanshichengxianzuijiahuocai。genjuguojiazuanshiqiegongbilibiaozhun，lixiangqiegongjibiezuanshidetaikuanbiyibanzai53%-66%，tingshenbizai56%-63.5%，yaohoubizai2-4.5（shizhong）fanwei。

钻石切割部位

qiegebilishizuanshiqiegongdezhuyaofenjibiaozhunzhiyi。zaiheliqiegebilideqiantixia，guangxianjinruzuanshihuicongyigedimianfanshedaolingyigedimian，zuihoucongdingbushechu，zuizhongchengxianchuyaoyandehuocai。yincihelideqiegongbiliduixuangouzuanshihenshizhongyao。

juedingqiegongyouliedezhuyaoyouqigeqiegebilv，baokuotaikuanbi、guanjiao、guangaobi、yaoweihoudu、dijiao、yaoxiakemianbi、yaoweihoudubidengdeng；

meiyigeqiegongjibiejunyouduiyingdeqiegebilifanwei。yijuduonianzongjie，guojiabiaozhunzuanshiqiegongbiliyudengjiduizhaobiaoruxia：

guojiabiaozhunzuanshiqiegongbiliyudengji

zaizuanshiqiegongbilizhong，guanbugaoduyutingbugaodudebili，yijitaimiankuanduyuzuanshizhijingkuandudebiliyouqiyingxiangzuanshidehuocaiheliangdu。tiaoxuanzuanshishi，ruguoduiqiegebiliyouyaoqiu，jianyishouxuan3exqiegong。yusuanyouxiandeqiantixia，vgqiegongbilidezuanshiyenengjieshou。

zhideyitideshi，guojiabiaozhunzuanshiqiegongbilibiaoyugiadebiaozhunyouyidingchabie。