24K金——18K金的区别

 　　kjin(huokaijin)shihuangjinyuqitajinshurongheerchengdehejin。kjinshipindetedianshiyongjinliangshao、chengbendi，youkepeizhichenggezhongyanse，qiebuyibianxinghemosun。kjinanhanjinliangduoshaoyoufen24kjin、22kjin、18kjin、9kjindeng。woguoshichangshangzuiduojiande“18kjin”，qihanjinliangwei18×4.1666=75%，shipinshangyingdashangdeyinjiwei“18k”huo“750”，neime，24kjin---18kjindequbiedouyounaxieni?

　　huangjindetedianzhiyijiushirouruan，suoyinanyixiangzhichugezhongjingmeidekuanshi，youqidangxiangqianzhenzhu、baoshihefeicuidengzhenpinshirongyibeidiushi。yinci，renmenzaihuangjinzhongjiarushaoliangyin、tong、xindengjinshuyizengjiahuangjindeqiangduherenxing，zheiyangzhichengdejinshi，youchengkjin。

　　kjinkeyigenjuxuyaopeizhichenggezhongyanse，zaiguojishangliuxingdekjinshoushigezhongyansedouyou，dajiachangjiandeyouhuangsehebaise。huangjinzhonghunru25%debahuonie，jiuhuichengweibaise，zuchengtadezhuyaochengfenhaishihuangjin，zheidejiaofajiujiaobaikjin。

　　jiumuqiandekejishuipingeryan，haiwufatilianchuchunduda100%dechunjincailiao。yinci，biaoshijinzhipinzhongchunjinhanliangdejinweibiaozhunk，yibanshijiangchunjinchengwei24kjin，dantashililunshanghanjinliangwei100%dejin，shijishangbingbucunzai。suoyiguojiabiaozhunzhong，shangjiabiaoshihuangjinshipindehanjinliangyilvbudeshiyong“24kjin”debuguifanbiaozhunfangfa。jiranchengchunjinwei24k，jililunshangdehanjinliangwei100%，ze1kjidaibiaojinzhipinhanchunjinzhan1/24，yue4.16%。18kjindaibiaohanjinliangwei18/24，yejiushihanchunjin75%，qiyudeweiqitadecailiaoruyinhuotong。

　　suhuashuo“jinwuzuchi”，yibanhuangjinshipinzhongdouhanyou1%yixiadeqitajinshu。duiyuhuangjinzhipinhanjinliangdechengsewenti，guojiabiaozhunyouhenmingquedeguiding，jishangjiaxiaoshoudemeijianhuangjinshipinbixuguapaibiaomingqihanjinlianghezhongliang。huangjinshipindezhongliangyilvshiyongguojiafadingjiliangdanwei。qihanjinliangyinggaishiyong“kjin”(buhan24kjin)、“zujin”(hanjinliangbushaoyu99%)、“qianzujin”(hanjinliangbushaoyu99.9%)，budeshiyong“qianzuchunjin”、“chunjin”yijishijishangbucunzaide“24kjin”、“9999”dengbuguifandebiaozhunfangfa。

　　gekaijinhanjinliangfenbiewei(kuohaoneiweiguojiabiaozhun)：

　　8k=8*4.166%=33.328%(333‰)

　　9k=9*4.166%=37.494%(375‰)

　　10k=10*4.166%=41.660%(417‰)

　　12k=12*4.166%=49.992%(500‰)

　　14k=14*4.166%=58.324%(583‰)

　　18k=18*4.166%=74.998%(750‰)

　　20k=20*4.166%=83.320%(833‰)

　　21k=21*4.166%=87.486%(875‰)

　　22k=22*4.166%=91.652%(916‰)

　　24k=24*4.166%=99.984%(999‰)

　　24kjinchangbeirenweishichunjin，chengwei\"1000‰\"，danshijihanjinliangwei99.99%，zhewei23.988k。