宝石重量单位克拉的由来

 　　zhubaojingqiao、guizhong，yongputongdefangshijilianghenbuzhunque。suoyi，renmenyizhixiangbanfaquxunzhaozuizhunquedejiliangdanwei，zuifangbianshiyongdefama。kela,huochengka、kala,cong1907nianguojishangdingweibaoshijiliangdanweikaishiyanyongzhijin。shizhuyu、zuanshidengbaoshidezhiliangdanwei,heguijinshudechundubili。

　　huanjuhuashuo，nashenmelaihengliangbaoshidezhongliangni?xuduominzudezuxianbumouerhe，douxiangdaoyongdangdichangjiandezhiwuzhongzi。dangran，zheiyangdezhongzibunengtaidayebunengtaixiao，zhongyaodeshibixuyinglajunyun，zhongliangjibenyiyang。

　　“克拉”的由来

　　ouzhouxuduoguojiazuichushiyongtamenshengchandedamailaizuoguima。danshigeguo、gedichuchandedamaidaxiaobutong，zhongliangchayigengda。yongtalaichengbaoshi，changchangfashengzhengduan。houlai，kaolvdaodaduoshubaoshilaizidongfang，qiancuizhaoyizhongdongfangzhongzilaizuotongyibiaozhun，keyimianquxuduochunshe。tiaolaitiaoqu，tiaozhongledizhonghaiyananbiandishengzhangdedoukezhiwujinhehuanshuzhiwujiaodoushudezhongzi。yinweixilarenjiaozheizhongzhiwudezhongziwei"kela",jiubatadingweibaoshidejiliangdanwei。

　　shunbianshuoyixia，4shijichuguluomajunshitandingdadifaxingdeyizhongjinbi，meimeidehanjinliangguidingwei‘.kala“dezhongliang，youci，youyanshengchuyubaoshijiliangdabuxiangtongdehanjinliangbiaozhun“kai’。qishizhei“kai“yu“kala.zaixuduowenzizhongtongshiyigeci，jianxiezimuyeyiyang(k)。zhongguorenweilebuyinqiwuhui，caiguyibatamenyichengliangyang，womenpingchangsuoshuode“24kai”jin，shishuomoujianjinqi(jinbi、jinshoushidengdehanjin!jiejin100%;ruoshuo18kai.，neiyisijiushi:hanjinliangshi18fen，hanqitajinshu6fen。zheijiushishuo“kai“biaoshidejinjinshibili，erbushizhongliang。

　　各国“克拉”的不同计算标准

　　yucibutong，kelashibaoshidezhongtongdanwei，1keladengyupoohaoke。dangran，zheizhongbiaozhunbingbushiyixiazijiuweigeguojieshoude。rushangsuoshu，jinguanouzhougeguozaojiutongyiyongjinhehuanzhongziji“kela’zuoweichengdanbaoshideguima，danshi，buyaoshuogedi、gezhujiaodoushushangjiedekelazhongliangbuyiyang，tongyizhushushangzhangsuozheyehuiyouchayi，yinci，zaihenzhangyigelishishiqi，gedadouhuikelasuobiaoshidezhongliangshijishangbingbuxiangtong，biru:bali-0.255ke，lundun-0.20530ke，foluolunsa-0.19720ke，madeliyi-0.20539，bolinyi0.20544ke，amusitedanyi0.20570ke，lisibenyi0.20539ke，falankefuyi0.20577ke，weiyenayi-0.20613ke，weinisiyi-0.20700ke，madelasi《yindu》yi0.20735ke。ruozhongliangdiyukela，zeyongfenshubiaoshi，ru1/2,1/8,1/64deng。youqishizuanshi，suixiaoyougui，zeyaoqiufenmuyidingshi64，yiqiuqizhunque，ru40/64kelajuebunengyong513kelalaidaiti。

　　制定统一的“克拉”计算标准

　　zheizhonggexingqishidehunluanjumianjibuliyubaoshideguojimaoyi，zhidingtongyidejiliangbiaozhunshizaibixing。1871nian，balizhubaoshanghuijianyijiang1keladengyu0.205kedejiliangbiaozhunlieruguojiadafa，xianzaifaguoshixing，zaiqiuouzhouheshijietongyi。1877nian，zheiyijianyihuodebalizuanshihebaoshishanghuidezaiciqueren，buguocihouquezhangqiwurenlicai。1907nianzaibalizhaokaideguojijiliangweiyuanhuidisicidahuishang，zhengshitongguojiangbiaozhunkeladingwei200haoke《ji。.200ke)dejueyi。qiqingquedudingdaoxiaoshudianyihoudi2wei;zidisanweiqi，wulunshishenmeshuzi，douhulvebuji。

　　danshi，youganguojijiliangweiyuanhuibingbujuyouquanweixing，weileshizheiyibianyujisuandebaoshijiliangbiaozhundeyizaishijiefanweineishishi，faguozhengfutongguoqizhuwaishituan，shuofugeguocainabiaozhunkela。jusimite《baoshi》yishusuozaishiliao，zaifaguozhihougeguochengrenbiaozhunkeladexianhoushunxushi:xibanya(1908);riben、ruishi（1909);baojialiya、danmai、yidali、nawei(1910) ;helan、putaoya、luomaniya、ruidian(1911 ) ;deguo(1912);bilishi、meiguo(1913);yingguo(1914);aodili、aierlan、moxige、sulian、taiguo(1922);nanfei( 1923);jiekesiluofake、bolan(1930)。dangran，chengrenshiyihuishi，shixingyoushilingyihuishi。biru，helanshizai1910niantongguolifazhengshichengrenbiaozhunkelade，keshidao1913niancaikaishishixing。conglaikanbuguanfaguoxinhuayangdeyingguorenxianranzaojiuyibushixingbiaozhunkela，keshijishang，xuduozhubaoshangzhijinrengjiuan1keladengyu0.20530kedelaoguijujimin;baoshishuzhongshieryonglaokela，shieryongbiaozhunkela，shieryongfaguokela(0.205ke)，bubaduzhedenaodaigaohunbusuanshu。buguo，jinnianlai，zaiguojibaoshijiaoyizhong，biaozhunkelayibeigongrenweitongyongdejitongbiaozhun。

　　lingwai，kongpayibanrenbuzhidao:zaiguojizhubaomaoyizhong，zhenzhudejiliangdanweibushiyongkela，ershiyonggeling。1gelingdengyu50haoke，yiji1/4kela。