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怎么鉴别金子真假
更新时间: 2021-01-07 22:16:01  

1、手掂法,黄金的比重是19.3,远高于银,铜等金属,通过比较重量就可以判断是否是假冒产品。

2、用手放到牙齿上咬黄金比较软,一般用牙齿咬就会有牙印,仿金没有这个特点。

3、用手把黄金放在眼前观察,黄金有耀眼的赤黄色,它们的光泽和颜色是经久不衰的,成色越低,颜色越差,有七青、八黄、九赤之说。

关键词: 怎么 鉴别 金子 真假

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