钻石科普：老矿式钻石切割

laokuangshizuanshiqiegefangshizhuyaoliuxingyu18shijizaoqizhi19shijiwanqi。zaoqi，tabeiyonglaizhidairenhepinzhihaoqiecaiyongjiaolaoqiemoyangshidezuanshi。erxianzai，laokuangshiqiegeshizhijinsifangxing、shiyong18shijizaoqikaishiliuxingdekemianpailiedezuanshi。

laokuangshiqiege（old mine cut）yuxiandaideyuanxingmingliangshiqiegezuanshiyiyangyou58gekemian，dantadetaimianjiaoxiao，xingzhuanggengjiejinfangxing。chucizhiwai，laokuangshiqiegezuanshidedijianjiaoda，guanbujiaogao，yaoxiakemianjiaoduan，yaoweihenbo。

yuxiandaidezuanshiqiegefangshixiangbi，laokuangshiqiegezuanshidekemianjiaoda。yinci，tazaidengguangxiakeyikandaogengda、gengmingxiandesekuai，danshanyaochengdubibushangxiandaideqiegezuanshi。

容易混淆的老欧式切割

zaisouxunlaokuangshiqiegezuanshishi，womenchangchanghuiyujianlingyizhonglaoshizuanshiqiege，jiaozuojiushiouzhouqiege（old european cut），yechengweilaooushiqiege。zheizhongqiemofangshiyeshiyu18shijizaoqi，yiyulaokuangshiqiegehunxiao。

laooushiqiegeshiyizhongyuanxingqiege，keyishuoshixiandaiyuanxingmingliangshiqiegedeqianshen。tadeguanbujiaogao，quanshengengda，dijianjiaoxiao。19shijiwanqi，youyuqiemojishudejinbu，yuanxingzuanshikaishiliuxing，yuanzuandeqiegebiliyezaibuduangaijin。conglaooushiqiegezhongyeyanshengchuleyixiexinyangshi，chengwei“guoduqiqiemo”。

suizhekejidejinbu，zuanshiqiegegongyiyezaibuduanfazhan。xianrujinzuichangjiandezuanshiqiegefangshijiushibeichengwei“lixiangqiexing”deyuanxingmingliangshiqiege，tayeyijingchengweixingyedebiaozhunqiexing。

chuyuanzuanwai，zhongduohuashizuanyeshourenxiai。huashizhuoxingdechuxiankezhuishuodao500duonianqian，zai20shiji50niandaiyihou，gezhonggeyangdehuashizhuoxingbuduanyongxian，duoshiyongyucaisebaoshidejiagong。

xianrujin，laokuangshiqiegeyijingbijiaoshaojianle，duoshichuxianzaigudongzhubaohekeyimofanggudianfenggedeshoushizhong。

ruguoduilaokuangshiqiegeyouxingqu，youxiangyaogenghaodemingliangduhehuocai，neimeyekeyikaolvdianxingqiegezuanshi。zuoweihuashiqiegedeyizhong，tayoujinsifangxingdelunkuohemingliangshideqiegongkemian，keyishuoshilaokuangshiqiegedexiandaiban。