首饰上刻有"750 L Italy 朋友从香港买了条银白色的手链送给我.上面刻有"750 L Italy" 750是否表示18K金?产地应该是意大利.但是大写字母"L"表示什么意思啊?还有,我如何鉴定这是铂金,白金还是什么
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/16 23:14:40
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