选择黄金首饰的六大技巧
2023-03-07
Meetu jewelry
47
越来越多的人开始购买黄金首饰，无论是送给家人、长辈、朋友，还是自己佩戴都不错。 它具有美好的含义和得体的外观。 那么你知道如何挑选金饰吗？金饰上的标识、吊牌都有明确的规定。 一般要有代号、材料名称、含量标志等。 制造商的。 没有这些信息的黄金首饰就是不合格产品！不要相信推销员所说的。 购买金饰时，最应该关心的是它的“颜色”，即金饰中黄金的含量。 1． 看分数标记 分数鉴定是以百分比和千分之一表示的黄金首饰中的含金量。 例如，如果标有G990或Au990，则表示这款黄金首饰的含金量为99%；如果标有G586或Au586，则表示其含金量为58.6%。 前者含金量较高，成色较好，当然价格也较贵。 选择时只要看看分数标识就知道含金量了。 2． 看文字标记 有些黄金产品除了刻痕外，还会有文字标记，更加简单、清晰。 只有2个字——纯金（含金量不低于99.0%的黄金）。 此外，还有镶嵌金属、千足金等标志，是指含金量不低于99.9%或99.99%的金饰。 不过，我国已经取消了镶嵌金属和千足金的命名，这两个标记将不再出现在金饰上。黄金的密度为19.32g/cm3，是铜密度的两倍多。 黄金在手有下坠的感觉，铜在手重但无下坠的感觉。 纯金和足金首饰的纯度非常高，非常稳定。 珠宝项链坠落或相互碰撞的声音会沉闷而平稳，有拍打声，坠落时不会动；质量差、纯度低的甚至假金落地或相互碰撞时，会发出“当当”的金属声，有时还会跳动声音，落地后还会跳动。 但不要用力撞击。 注意变形。看颜色和光泽。 颜色以红、黄色为最佳，但也要注意观察产品的外观颜色，不好的颜色是深青色。 有些装饰品的颜色太暗淡，就像喷出来的油漆颜色一样。一定要用手摸一下，看密封是否良好，焊缝是否松动，是否断裂，是否粗糙，是否有裂纹等。纽扣容易掉落，这些都需要仔细检查。 同时，纯金首饰定制项链容易变形，一定要看整体形状是否变形。 黄金首饰表面的纹理不容忽视。 要选择表面清晰、亮度好、纹理均匀的首饰。 购买时还应注意首饰的边缘是否光滑，好的首饰制作精美。黄金首饰容易弯曲，黄金越纯，越柔软。 纯金首饰的硬度为2.5，与人的指甲差不多，因此可以用指甲画出精细的痕迹。 与其他金属相比，更难弯曲（适合小克重的金饰，如大克金条无法折叠）。定制名字项链
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