Crystal Fundamentals Explained
Crystal Fundamentals Explained
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17These rings are indicative from the crystal framework of nickel and might be defined only by invoking wavelike Houses of sunshine.这些光圈表明了了镍的晶体结构，而且只能通过光线中波的特征来解释。
按照透明度指标，水晶越透明，价格越高，好的透明的水晶加工出的成品晶莹剔透、光辉耀眼。透明度高的水晶能提升颜色的艳丽，否则显得呆板无灵性。光学水晶要求全透明、无双晶、无杂质。工艺水晶要求透明、少裂、少瑕疵。熔炼水晶要求透明，可有较多裂纹。三者价值依次降低，熔炼水晶只能作为熔炼水晶玻璃的原料。在工艺水晶中，晶体较大的，可用来做水晶眼镜和雕刻高档工艺品，因而价格较高。
对水晶进行评价主要依据其颜色、透明度、大小、净度、特殊图案及是否有光学效应等方面。以颜色纯正，浓度较高，内部无瑕为好。种类上紫晶最贵，其次为黄晶、烟晶、无色水晶和芙蓉石。有特殊光学效应的水晶的价格更高。
水碧：《山海经》中，水晶又被称作水碧： �?又南三百里，日耿山，无草木，多水碧 �?，郭璞注�?�?亦水玉类 ”。这种称谓常被文人所引用，晋代郭景纯《璞江赋》道�?�?鬼，水碧�?�?。水晶又有人称它叫玉瑛。《符瑞图》载�?美石似玉，水精谓之玉瑛也�?”
断口：贝壳状。断口也叫破口。它是指矿物被打击后产生不规则的破裂，破裂裂面凹凸不平称为断口。根据断口的形状可分为贝壳状和锯齿状。
结晶�?When sea h2o is permitted to evaporate, salt crystals are deposited. 海水蒸发后，盐的结晶体就沉淀下来。
Insert to word listing Add to term list [ C/U ] transparent rock that appears like ice, or maybe a bit of it
26Some of the finest ingesting glasses are created from direct crystal.一些最精致的酒杯是用铅晶质玻璃制成的。《柯林斯英汉双解大词典》
Amongst the binary crystals, the best structures to visualize are those with equivalent quantities of the two different types of atoms. The framework of sodium chloride is based over a cube. To construct the lattice, the sodium and chlorine atoms are placed on alternate corners of a cube, and also the structure is repeated (Determine 3B).
看文化：水晶里面的包裹体象形，能与文化、宗教及历史有所牵连的话，价格往往会比水晶本身的价值高出几倍甚至几百倍。
天然性是水晶观赏石的基本特性。通常整体造型水晶矿物不饰雕琢就具备很高的观赏价值，但是包裹体水晶观赏石经常需要适当打磨抛光，这样更方便观赏水晶内部的包裹体。
国家还并未给天然水晶提供一个等级划分的具体标准，水晶品种繁杂，每一品种都有他不同的评判标准。
Crystals are categorised generally groups, for example insulators, metals, semiconductors, and molecular solids. Just one crystal of an insulator is normally clear and resembles a piece of glass. Metals are shiny Unless of course they've rusted. Semiconductors are sometimes shiny and in website some cases clear but are never rusty. Several crystals is often categorized as a single kind of reliable, while some have intermediate behaviour. Cadmium sulfide (CdS) is usually organized in pure type and is a wonderful insulator; when impurities are extra to cadmium sulfide, it gets a fascinating semiconductor.
A further sort of crystalline carbon is predicated on a molecule with 60 carbon atoms referred to as buckminsterfullerene (C60). The molecular shape is spherical. Just about every carbon is bonded to 3 neighbours, as in graphite, plus the spherical form is accomplished by a mixture of twelve rings with five sides and twenty rings with 6 sides. Comparable constructions had been 1st visualized because of the American architect R. Buckminster Fuller for geodesic domes.