鉴别珍珠的方法之一,用刀刮一下,如掉粉末,且用手抹被刮处能恢复亮泽,是真珍珠。能恢复亮泽是什么原因? 知乎 Template




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tomski鉴别珍珠的方法之一,用刀刮一下,如掉粉末,且用手抹被刮处能恢复亮泽,是真珍珠。能恢复亮泽是什么原因? 知乎 coloring