黄金的标准质量是多少
关键字：黄金的标准质量是多少
黄金K金是含金量的等级单位：国际上对含金量标准规定了24个等级，每级单位是1“K”，故24K金即是足金，其含金量的理论值应为100%，但金无足赤，因此严格地讲，24K金是不存在的。
国家标准“GB11887-8P”规定：含金量不小于990‰为足金，含金量不小于999‰为千足金。同时对K金的纯度也作了规定，其中8K的含金量不小于333‰，18K的含金量不小于750‰，24K的含金量不小于999‰。
24K含金99%，22K含91.7%，18K含75.1%，14K含58.5%，12K含50%。
目前市场上销售的黄金饰品，分为足金和K金饰品，根据国家标准GB11887中的规定，常见的几种黄金首饰含量为：
24K——目前国际黄金市场偶见标有24K黄金饰品，根据国家标准，24K金含量理论值应为百分之百，金无赤足，因此严格的讲，24K是不存在的，销售中标有24K金是不正确的，不符合国家标准。
千足金——含量为99.9%，俗称三个9。
足金——含量为99.0%，以上，俗称二个9。
18K——含量为75.0%，K金的颜色有多种，通常有黄、红、白色之分。其中白色K金,实际上是黄金与镍、锌、铜等元素的合金。它不是通常所说的白金饰品。白金是指贵金属铂（Pt）。
本文来源： 大田环球贵金属
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