Deutsch-Chinesische Enzyklopädie, 德汉百科

       
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紫水晶
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紫水晶的成分是二氧化硅,硬度7 ,比重2.65,折射率1.54-1.55,具二向色性。从不同角度观赏,可显示出蓝或红的紫色调,通常以混合式或阶式做成刻面。天然产出的紫水晶因含、锰等矿物质而形成漂亮的紫色,主要颜色有淡紫色、紫红、深红、大红、深紫、蓝紫等颜色,以深紫红和大红为最佳,过于淡的紫色则较为平常。天然紫晶通常会有天然冰裂纹或白色云雾杂质。具有宝石价值的紫晶均产在火山岩伟晶岩、或灰岩、页岩晶洞中。紫晶在自然界分布广泛,主要产地有巴西、俄罗斯、南非马达加斯加。全球最大最完美无瑕的一颗刻面紫水晶,尺寸:71.5mm×58.5mm×46.3mm,切割成刻面大水滴形状。重量1030克拉,产地斯里兰卡,深紫色带粉色调,颜色饱和浓艳。切割打磨比例标准,内部极为纯净。这颗宝石是目前为止全世界最大最完美的刻面紫水晶,也是世间罕见水晶精品中的精品。 
中文名
紫水晶
外文名
amethyst
别    称
紫水玉、紫水精、紫水碧、
类    别
二氧化硅
化学式
SiO2
颜    色
紫红、深紫、蓝紫、深红等
条    痕
无色
晶    系
三方晶系
解    理
无解理
断    口
贝壳状
硬    度
7
晶体惯态
固体
矿物密度
2.56-2.66
比    重
2.65
分    布
米纳斯和吉拉斯、马达加斯加、阿肯色州、俄罗斯的乌拉尔、缅甸等
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Amoreiras 购物中心
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苹果公司
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蘋果手錶 苹果手表

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阿拉比阿
1874
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阿尔巴特大街
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愛彼特 爱彼特

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阿瑞娜
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