925纯银是92.5%的银加上7.5%的合金，是国际公认制作银首饰的标准材料，国际规定，凡是92.5%的银就可以称为纯银。
925银是国际上做银饰品的国际标准银。与9.999银有所不同，因为9.999银的纯度比较高，非常柔软难以做成复杂多样的饰品，而925银能做到。淘金易有显示到925银饰品其实并不是含银量100%，那是因为在纯银中加入的7.5%的合金，让银的光泽、亮度和硬度都有所改善。
由于加入了7.5%的合金，使银具有了良好的硬度、亮度及光泽，而且能够镶嵌各种宝石，从此银首饰以色泽光鲜、款式别致、工艺精美的时尚品位，迅速风靡全世界。
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