白银饰品的真假辨别
关键字：白银饰品
根据有关规定，银首饰的含银量是需要准确标明的。消费者在购买银饰时不妨先查看首饰上是否有关于纯度的标示S925，Ag925（时尚类多见），或S990，Ag990（传统手镯童锁）。若银饰没有标示相关纯度，那基本可以断定是普通金属，反之则为贵金属。
查硬度：银首饰成色越高质地越柔软，表面越洁白光润。以60克左右的银镯子为例，如用手一拉就开，没有弹力，其成色在95%左右；如有点弹力，成色约在80%~90%；如弹力较大，成色则在70%以下。
辨色法：用眼观察，看上去洁白、有光泽，做工细，并在首饰上印有店号的，为成色高的银首饰;色泽差，无光泽的多为假银首饰。
折弯法：用手轻折银首饰，易弯不易断的成色较高;僵硬、勉强折动的成色较低;经折弯或用锤子敲几下就会裂开的为包银首饰;经不起轻折，且易断的为假货。
硝酸鉴别法：用玻璃棒将硝酸滴于银首饰锉口处，呈糙米色、微绿色的成色较高;呈深绿、黑色的成色较低。
抛掷法：将银首饰从上向下抛在台板上，弹跳不高，声音平稳的为成色高的银首饰;抛在台板上跳得较高，声音尖亮的，为假的或成色低的银首饰。
本文来源： 大田环球贵金属
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