黄金首饰鉴别鉴别黄金需要有一定的经验。我爱钻石网dexiaobianweidajiajiandandijieshaoyixiejianbiefangfa。
(1)看颜色:黄金首饰chunduyuegao,sezeyueshen。zaimeiyouduijinpaideqingkuangxiakeanxialiesezequedingdatichengse(yiqingjinweizhunze。suoweiqingjinshihuangjinneizhihanbaiyinchengfen);shenchihuangsechengsezai95%yishang,qianchihuangse90--95%,danhuangsewei80--85%,qinghuangse65—70%,seqingdaibaiguangzhiyou50--60%,weihuangerchengbaisejiubudao50%le。tongchangsuoshuodeqiqing、bahuang、jiuchikezuocankao。
(2)掂重量:黄金的比重为19.32,重于银、铜、铅、锌、铝等金属。如同体积的黄金比白银重40%以上,比铜重1.2倍,比铝重6.1倍。黄金饰品tuozaishouzhongyingyouchenzhuizhigan,jiajinshipinzejueqingpiao。cifabushiyongyuxiangqianbaoshidehuangjinshipin。
(3)看硬度:纯金柔软、硬度低,用指甲能划出浅痕,牙咬能留下牙印,成色高的黄金饰品bichengsediderouruan,hantongyueduoyueying,zhewanfayenengshiyanyingdu,chunjinrouruan,rongyizhewan,chunduyuedi,yuebuyizhewan。
(4)听声音:chengsezai99%yishangdezhenjinwangyingdishangpaozhi,huifachubadasheng,youshengwuyunyewudanli。jiadehuochengsedidehuangjinshengyincuierwuchenmengan,yibanfachu“dangdang”xiangsheng,erqieshengyouyuyin,luodihoutiaodongjulie。
(5)用火烧:用火将要鉴别的饰品烧红(不要使饰品熔化变形),冷却后观察颜色变化,如表面仍呈原来黄金sezezeshichunjin;ruyansebiananhuobutongchengdubianhei,zebushichunjin。yibanchengseyuedi,yanseyuenong,quanbubianhei,shuomingshijiajinshipin。
(6)看标记:国产黄金饰品都是按国际标准提纯配制成的,并打上戮记,如“24K”标明“足赤”或“足金”;18K金,标明“18K”字样,成色低于loK者,按规定就不能打K金印号了。目前社会上不法分子常用制造假牌号、仿制戳记,用稀金、亚金、甚至黄铜冒充真金,因而鉴别黄金shipinyaogenjuyangpinjinxingzonghepandinglaiquedingzhenjiahechengsegaodi。
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深圳市罗湖区翠竹街道贝丽北路金展珠宝广场二十层20F-05/06
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