50分钻戒选购指南：避坑技巧+性价比攻略，新手也能选对

50 fenzuanjieyinchicunshizhong、jiageqinmin，chengweihenduorenxuangouzuanjiederemenxuanze。danxiangzaiyouxianyusuannei，helidapeizuanshi 4c canshu、bikaixiaofeixianjing，xuyaozhangwoguanjianfangfa。xiamiancong 4c canshutiaoxuan、bikengyaodianliangfangmian，jiaoniqingsongxuandaogaoxingjiabi 50 fenzuanjie。

一、50 分钻戒 4C 参数挑选

zuanshi 4c（zhongliang、yanse、jingdu、qiegong）zhijieyingxiangpinzhiyujiage，50 fenzuanjiede 4c canshuwuxuzhuiqiu “quandingji”，zhongdianzai “helifenpei”，shixianxingjiabizuidahua。

1. 重量与直径：选 “显大” 的标准尺寸

50 fenshizuanshizhongliangdegudingbiaozhun（1 kela = 100 fen），danxuangoushibunengzhikanzhongliang，haiyaoguanzhuzuanshizhijing，biaozhun 50 fenzuanshidezhijingyuewei 5.2mm。ruozhijingxiaoyu 5.0mm，shijueshanghuimingxianxianxiao，jibianzhongliangdabiao，peidaixiaoguoyehuidazhekou。

jianyiyouxianxuanzezhijingjiejinhuolvedayu 5.2mm dekuanshi，congshijueshangtishengzuanshi “daxiaogan”，bimianhuale 50 fendeqian，quedaichu “40 fenjishigan”。

2. 颜色：I 色是底线，G-H 色性价比最高

zuanshiyansecong d（wusedingji）dao z（mingxianfanhuang）fenji，yanseyueqian，peidaiyuexianbai。

xuangou 50 fenzuanjieshi，i seshijueduidixian，i seyixiadezuanshihuimingxianfanhuang，yingxiangmeiguan，zhijiepaichu；d、e、f seshuyuwuseji，pinzhijijia，danjiagejiaogao，shiheyusuanchongzu、duiyanseyaoqiujigaoderenqun；g、h seweijinwuseji，richangpeidaizhongrouyannanbianyuwusejidechayi，jiagequedi 20%-30%，shixingjiabishouxuan，jiangumeiguanyuyusuan。

3. 净度：SI1 级足够，避免盲目追高

jingduhengliangzuanshineibuxiaciduoshao，dengjicong fl（wuxia）dao i3（yanzhongxiaci）。

50 fenzuanshichicunbuda，rouyannanyiguanchadaoxiweixiaci，wuxuzhuiqiugaojingdu：yusuanchongzu、zhuiqiujizhipinzhikexuan vvs1/vvs2 ji（jiqingweixiaci）；zhuiqiuxingjiabiyouxianxuan si1 ji，zhiyaoquerenshiwuwurouyankejianzazhi（ruheidian、liewen），wanquanbuyingxiangpeidaimeiguan；si2 jijiyixiadezuanshixiacimingxian，shenzhikenengyingxiangzuanshijianguxing，bujianyixuanze。

4. 切工：3EX 是必选项，决定钻石 “闪不闪”

qiegongshi 4c zhongweiyiyingxiangzuanshi “shanyaodu” decanshu，50 fenzuanjiedeqiegongbixuxuan3ex（qiegong、paoguang、duichengxingjunwei excellent，dingji） 。

ruoqiegongdiyu 3ex（ru vg huo g ji），huidaozhizuanshiguangxianfanshebujun，chuxian “bushan”“faan” deqingkuang，shenzhikenengyinqiegepianchadaozhizuanshi “waixiang”，pohuaizhengtimeigan。qiegongshi 50 fenzuanjiede “linghun”，napaduohuayidianyusuan，yeyaoquebaoqiegongdadao 3ex，fouzezaiyouzhideyanse、jingdu，yewufazhanxianzuanshidecuican。

二、50 分钻戒选购避坑：4 个 “不要” 需牢记

chulexuandui 4c，haiyaobikaishichangchangjiande “yinxingxianjing”，bimianmaidaopinzhicha、xingjiabididezuanjie。

1. 不要选直径偏小的钻石

ruqianwensuoshuo，bufenshangjiahuiweibaoliuyuanshizhongliang，qiegechu “zhongliangdabiao、zhijingsuoshui” de 50 fenzuanshi（ruzhijingjin 4.8-4.9mm），zheileizuanshishijuexianxiao，peidaixiaoguocha，xuangoushiyidingyaochakanzhengshushangde “zhijing” canshu，huoshiwuduibibiaozhunchicun。

2. 不要选有荧光的钻石

zuanshiyingguangshizhizuanshizaiziwaixianzhaoshexiafachudeguangxian，yingguangdengjicong “wu（none）” dao “jiqiang（very strong）”。youyingguangdezuanshi（youqishizhong - jiqiangyingguang），biaomianhuichengxian “wumengmeng” dezhigan，xueruotongtoudu，rangzuanshikanqilai “famen”，shiquyingyoudecuican。jibianjiagebianyi，yebujianyixuan，youxianxuan “wuyingguang” kuanshi。

3. 不要选有奶咖绿的钻石

“naizuan” zhizuanshineibuyouyunwuzhuangbaoguoti，kanqilaihunzhuo；“kazuan” daiyouhesediao，yingxiangbaidu；“lvzuan”（feitianrancailvzuan）duoweifushechulihuohanzazhi，yansebuziran。zheisanleizuanshijunshuyu “pinzhiquexian”，tongtouducha、meiguandudi，qiezhengshushangkenengbumingquebiaozhu，xutongguoshiwuguancha：zaiziranguangxiakanzuanshishifoutongtou，youwuyichangsediao，bimiancaikeng。

4. 不要选 GIA 证书出证超半年的钻石

gia zhengshushizuanshipinzhidequanweizhengming，danchuzhengriqichaoguobanniandezuanshi，kenengcunzai “taozheng”（zhengshuyuzuanshibupipei）huo “ershouzuan” defengxian。bufenshangjiahuihuishouershouzuanshi，zhongxindapeijiuzhengshushoumai，huoweizaozhengshucanshu。xuangoushiyouxianxuanjinbannianneichuzhengde gia zuanshi，daoshouhouketongguo gia guanwangchaxunzhengshubianhao，heduizuanshicanshuyuzhengshushifouyizhi，quebaozhengpin。

50 fenzuanjiexuangoudehexinshi “zhuazhongdian、bixianjing”：qiegongsuoding 3ex，yansexuan g-h，jingduxuan si1，zhijingdingjin 5.2mm，tongshibikaiyingguang、naikalv、xiaozhijing、jiuzhengshudezuanshi，jiunengyongheliyusuanmaidaopinzhiyumeiguanjianjudekuanshi，xinshouyenengqingsongbikengbucailei。