什么是蓝珀,怎么鉴别蓝珀真假

2025年04月04日 14:22
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蓝珀在黑底自然光下以蓝色为主色调,根据其内部不同的杂质以及成分会呈现天空蓝、湖蓝色、蓝绿色,有些高品质的还呈现紫色。同一块琥珀在光线下不同的角度亦可以看到浅蓝、深蓝、天蓝、紫罗蓝、海水蓝、湛蓝、红蓝、黄蓝、绿蓝等多种颜色变化。
自然光下蓝色琥珀具有暖色调的体色,仔细观察可以发现内部近表面可见若隐若现的微蓝色调。一旦受到强光照射,表面就会呈现明显的蓝色。这种蓝色集中在表面,但很均匀,强光照射中心周围呈纯蓝色。
蓝珀的密度比一般的琥珀的要重。但从实验测试的结果来看,蓝色琥珀的密度(SG)集中在1.04-1.05之间,与普通琥珀的密度基本相似,甚至还要轻。另外虽然没有用硬度笔进行系统的硬度测试,但从个别的硬度测试中发现蓝珀原料的硬度要稍高于一般的琥珀。

蓝珀的折射率与一般的琥珀没有什么区别,RI(折射率)=1.53、1.54(点测),表面呈树脂—玻璃光泽。蓝珀是均质体但偏光镜下有明显的异常消光现象:有些呈明暗变化的现象;有些样品全亮,但转动样品就可以看到清楚的干涉色。

蓝珀无论是原料还是成品,其荧光反应比普通琥珀都要强得多。通常,长波下荧光明显比短波下的要强。蓝珀在长波下呈明亮的垩蓝白色荧光,相当一部分的样品在同样的条件下带有绿色调,甚至有些还呈蓝绿色。在短波下普遍呈弱绿或暗绿色,与普通琥珀的区别不是很大。

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