An Unbiased View of Crystal
An Unbiased View of Crystal
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天然的水晶一般都会有絮状（绵绺），也就是大家俗称的瑕疵，这是液体水落石出和二氧化碳的小孔穴，而人工合成的水晶就不会有这样的特征。
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一般而言，紫晶和黄晶是水晶中价值较高的品种。两者进一步的分级是据其颜色的深浅，颜色较深的为A级，稍浅的为B级。一般颜色较深的价格高，但要以不深暗为标准。颜色包括两种，一种是水晶本身的颜色，另一种是内部包裹体的颜色。水晶本身的颜色要艳丽、纯正，分布要均匀，不能太深或太浅，如澳州玉、蓝玉髓、紫晶、黄水晶，其价格就高。无色的水晶内含包裹体的颜色艳丽，其价格也高，如钛晶、绿幽灵、红兔毛。紫水晶一般以稍有云状物、颜色深紫、晶体通透的为上品。
Massive crystals of diamond are useful gemstones. The crystal has other interesting Attributes; it's the very best seem velocity of any good and is the greatest conductor of heat. In addition to diamond, the other widespread method of carbon is graphite, which can be a layered product. Just about every carbon atom has 3 coplanar near neighbours, forming an arrangement known as the honeycomb lattice. A few-dimensional graphite crystals are received by stacking identical levels.
Fig. 4: Creating blocks with different shapes and area chemistries direct the formation of unique crystal symmetries.
They will inevitably create a good tiny uniform cluster of atoms, this is the whole process of expanding crystals. The more they will occur alongside one another, the greater of the development might be visible on the bare eye. Scientists can identify what mineral They're thinking about by how the crystals form.
光泽：玻璃光泽。断口处为油脂光泽。光泽，指宝石表面对光线反射的一种光学性质。观察水晶的光泽，可用手握着它，以灯光或窗户投进来的光线看表面反射，透明水晶亮度与光泽强弱有关。
如果水晶内部杂质中有传说中人物的造型，如佛、星座、生肖等价值可能要高于同等颜色和净度的水晶。
Metallic Crystals: Metals usually sort metallic crystals, where several of the valence electrons are totally free to maneuver through the entire lattice. Iron, as an example, can sort distinct metallic crystals.
crystal The recently crystallized quartz grains are characterised by elongate crystals oriented oblique into the shear band margins, defining an average grain-shape foliation. 来自 Cambridge English Corpus We say the chain topology within the large w area functions more info as the proverbial ' scratch-on-theglass ' required inside the organic and natural chemistry laboratory to create crystals. 来自 Cambridge English Corpus The age scatter among the person crystals may replicate incorporation of xenocrysts from previously magmatic pulses or protoliths. 来自 Cambridge English Corpus The clinopyroxene sorts neutral to pale brown, subhedral to anhedral crystals, sometimes made up of inclusions of plagioclase microlaths and opaque phases.
Look through cryptosporidiosis cryptosporidium cryptozoologist cryptozoology crystal crystal ball crystal distinct idiom crystal lattice BETA copyright #randomImageQuizHook.filename #randomImageQuizHook.isQuiz Take a look at your vocabulary with our fun image quizzes
Orthorhombic: These are typically rhombic prisms and dipyramids that resemble tetragons but with no square cross-sections.
《古今小说·李公子救蛇获称心》：“器皿皆是玻璃、水晶、琥珀、玛瑙为之，曲尽巧妙，非人间所有。”
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