Crystal Secrets
Crystal Secrets
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27Local economists have seemed into their crystal balls and seen one thing fairly terrible.当地的经济学者们已预测到将会出现棘手的问题。《柯林斯英汉双解大词典》
the reliable condition of numerous very simple substances, which have a regular condition and surfaces arranged in comparable styles
4Without a crystal ball, It truly is unachievable to say where by we will be future year.不用水晶球预卜未来，我们说不准明年处境如何呀。《牛津词典》
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这种水晶观赏石特指水晶晶簇，它是众多单晶体集中生长在一起的晶体组合。晶簇以其晶莹剔透、独特造型而享誉水晶赏石界。
无色水晶与无色长石因折射率和密度十分接近故较难区分。主要方法是放大检查。长石有两组极完全解理，显微镜下可见两组解理相交而成的“娱蛤状”包裹体或细直的纹理，而水晶则无解理发育，仅有时可见断续不规则的裂理。
解理：无解理。所谓解理是指矿物被打击时，沿一定方向有规则地裂开形成光滑平面的性质。根据解理的程度可以分为五类：极完全解理、完全解理、中等解理、不完全解理和无解理，水晶属于无解理。
Ionic Crystals: Electrostatic forces type ionic bonds. A classic case in point is a halite or salt crystal.
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广义的包裹体是指宝石内部含有的与主晶宝石化学成分、物理性质等不同的物质。
16I opened the box and saw a piece click here of crystal snowflake and a greeting card with "Happy Birthday" from the blank paper.我打开盒子并看见在白纸中有一片水晶雪花和一张写着“生日快乐”的贺卡。
正常的水晶在生长时，多可以发现和柱形尖端棱线平行的生长纹（development traces）。由于在地底、岩洞中的生长空间多狭窄，尤其在遇到地震时，或地壳变动时，甚至容易遭到其他矿石的挤压，常常会压迫产生不同的「晶面」。还有，当水晶还是在液态状的时候，常常也会包覆着其他的矿石、泥灰一起结晶成长，如金红石（稍后变成发晶）、火山泥灰（稍后变成幻影水晶）等等。所有的这些，都是「自然的一部分」，请不要视为「瑕疵」。
压电性：水晶晶体受到压力时会产生电荷；反之，受到电压作用时，晶体会产生频率很高的振动。水晶具有可使压力与电荷相互转移的性能，称压电性。
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