如何鉴别青金石

2025-04-07 22:02:06
推荐回答(1个)
回答1:

青金石鉴别方法:

1、天然青金石在放大镜下能够看到粒状结构,有黄色黄铁矿以及少量墨绿色透辉石,颜色杂。

染色的青金可以看“白点”鉴别,一般用了染色剂的青金色彩鲜艳,颜色单一均匀,但白点里还是能看出一点染色剂的蓝色存在,会给人以不舒服的感觉。

2、青金石一般呈蓝色,其颜色是由所含青金石矿物含量的多少所决定的,好的青金石颜色深蓝纯正,无裂纹、质地细腻,无方解石杂质,可以做成首饰等。如交织有白石线或白斑,就会降低颜色的浓度、纯正度和均匀度,首饰的质量就会下降。

合成青金密度较之天然的青金低,空隙发育,在水中一段时间后重量增加。

3、青金石的质地应致密、细腻,没有裂纹,黄铁矿分布均匀似闪闪星光为上品。天然青金透明度较之高,在强光透射下,可见蓝色光晕,而合成青金不可见光晕。

黄铁矿局部成片分布,则将影响到青金石玉石的质地,同时裂纹越明显质量等级也越低。

参考资料来源:百度百科-青金石

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