为什么两颗相同重量的钻石，看起来却不一样大？

kelashibiaoshizuanshidaxiaodezhongliangdanwei。tashi4cfenjizhongweiyiyigenengzaixingyeneikeguanbingtongyiceliangdebufen。tongyikezuanshidezhongliang，zairenheyigezuanshichengshangdouyinggaishixiangtongde，bingqiexuyaojingquedaobaifenwei。

eryingxiangtongyangkelazhongliangdezuanshichengxianchubutongchicunwaiguandesangegenbenyuanyinbaokuo：zuanshidexingzhuang、taikuanbiheliangdu。

钻石形状

tizhongxiangtongderentixingbuyiyang，duiyuzuanshiyeshiruci。dangkelazhongliangxiangtongdezuanshibeiqiegechengxingzhuanggeyihoujiuyiweizhezheixiezuanshizaixiangqianshishijueshangyehuichengxianchubutongdaxiao。

tongchangshichangshang，tingbuqiedijiaoshendezuanshixingzhuang，liruzhendianxinghegongzhufangzheiyangdeqiegefangshihuibiyuanmingliangxingqiegesuochengzaidezhonglianggengda，yincicongguanbukan，tamendechicunkanqilaihuigengxiao。

ertingbuqiedijiaoqiandezuanshixingzhuang，liruzumulvxing，ganlanxinghetuoyuanxingqiegegengnengmanzushenmeixuqiu，dankenengtamendesesanhuohuocaijiaotingbushendezuanshilaishuoxiangduijiaoruo。

xiangxiangyixia，yige500kedefantuanheyige500kedepisa，tamendezhongliangsuiranshiyiyangde，dantamendebiaomianjiqueshibuyiyangde，yinweifantuandezhongliangshiyigengshendechuizhijihexingzhuangfenbude，erpisadezhongliangshishuipingfenbude。congshangmianguanchashi，ziranyehuijuedepisagengdayixie，zuanshiyishiruci。

台宽比

yiyuanxingmingliangshiqiegedezuanshilaishuo，tadetaikuanbizhideshitaimiandezuidakuanduyuyaobupingjunzhijingzhibi。

yishangtuzheisankeyuanxingmingliangshiqiegedeyikelazuanshiweili，keyikanchu，suirandoushitingshenxiangtongdeyikelazuanshi，danshitaikuanbiyuedadezuanshizaishijueshanghuixiandeyueda。

钻石亮度

zuanshideqiegefangshijuedinglejinruguanbudeguangxianshihuicongzuanshitingbudekemianfanshehuiguanchazhedeyanjing，haishihuitongguozheixiekemianfasheng"louguang"xianxiang。

biaozhundeqiegefangshikeyitishengzuanshideliangdu。zairichangguangyuanxia，tadeshijuexiaoguohuixiandejiaoda。erduiyuqiegedetaiqianhuotaishendezuanshilaishuo，huichuxian“louguang”xianxiang，shiqibianan，zairichangguangyuanxiajiuhuixiandejiaoxiao。

zhubaodianneiyibandouhuishiyongguangyuanjiaoqiangdeshedeng，yinweitanengshizuanshixiandegengjiamingliang。danshiruguozairichanghuoguangyuantiaojianjiaochadehuanjingzhongguanchazuanshidehua，kanqilaijiuhuibuyiyangle。

zairichangdeguangyuanxia，0.80kezuanshikanshangquzhengkedoushimingliangde，er1keladezuanshiquemeiyou，bingqie0.80keladezuanshibi1keladechicunkanshangquyaogengda。

tongguoyishangjieshao，xiangxindajiayijinglejieweihexiangtongzhongliangdezuanshi，kanqilaiquedaxiaobuyiyang。erzaijinxingzuanshixuangoushi，buyaoyiweidiguanzhuzuanshidaxiao，youxiechicunguodadezuanshiqiegongbilikenengjiaocha，nanyichengxianhenhaodeshijuexiaoguo。