看颜色：即使在同一种类的水晶中，它的不同部位的纹理、色泽也各式各有千秋。属于单色的，要色度均匀；在同一块水晶上有深浅的，则要求其色调纹路美观大方。
Bismuth (Bi) seems for being a metal, but the volume of electrons accessible for electrical conduction is analogous to that of semiconductors. The truth is, bismuth is referred to as a semimetal. Molecular solids are usually crystals fashioned from molecules or polymers. They are often insulating, semiconducting, or metallic, according to the style of molecules within the crystal. New molecules are repeatedly currently being synthesized, and several are made into crystals. The quantity of diverse crystals is big.
A crystal framework focuses on how the atoms are organized inside the crystal. Having said that, crystallographers have an interest in the general condition and measurement of the crystal in addition to its external traits. To perform this, they should learn about the crystal technique.
Fig. 3: A library of lattice symmetries might be accessed by changing the particle core and DNA shell.
《全唐诗》卷七八五载《白雪歌》：“鸟啄冰潭玉镜开，风敲檐溜水晶折。”
⑧、雕刻：立体感强，工艺高，做工精细，成本高。分手工雕刻图形、机器雕刻文字。
水晶内部有多种矿物包裹体，形成的各种景观可以肉眼观测，这样的水晶就是包裹体水晶观赏石。由于水晶本身就是宝石，因此人们称誉包裹体水晶为“宝石级的观赏石”。包裹体水晶观赏石都具有独特性，具有极高欣赏和收藏价值。
市场上有很多人把熔炼水晶也叫做合成水晶，那是不准确的，一般都是以水晶废料为原料在高温高压下熔炼出来的，而不是结晶成的，不具备水晶的晶体特性，所以不能把熔炼水晶与合成水晶混为一谈；但是熔炼水晶耐高温，用优质二氧化硅熔炼成的熔炼水晶可以做成实用产品比如水晶杯、烤盘、茶具等，实际上一代伟人毛泽东主席的水晶棺就是选用东海优质水晶熔炼而成的。
水晶是有成色等级之分，影响水晶价位的因素很多，不像钻石以4C就可以判定，所以大家要多听多看多比较才能真正辨别出来。一般的标准是水晶石越大越好，越透越好，颜色越娇嫩越好，形状越典型越好。不过最重要还是自己喜欢，而选购时辨识真伪的方法大致有下列几种：
⑤化学稳定�?非常好，在常温下仅溶解于氢氟酸，不溶解于其它各类酸、碱。在高温高压条件下可溶解于碳酸钠溶液中。
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。
14For case in point, We now have Quartz crystal clocks and watches correct to within a single moment a 12 months.例如，我们使用的每年误差不超过one分钟的石英水晶钟表和手表。
crystal Alteration is variable: absent in many crystals, in Many others making dense sericite aggregates which may demonstrate some recrystallization consequences to provide coarser-grained white mica. From your Cambridge English Corpus The tridymite crystals are rectangular or wedge-formed and are occasionally arranged in aggregates. Through the Cambridge English Corpus On top of that, haloarchaeal cells ended up embedded in salt crystals below laboratory disorders and subsequently analysed by light microscopy. In the Cambridge English Corpus The white clouds (usually sparse) have been also broadly considered currently being made up of tiny crystals of drinking water ice, rather like cirrus inside our atmosphere. From your Cambridge English Corpus These are present in evaporite salt lakes and can be trapped in salt crystals in the course of evaporation. From your Cambridge English Corpus Consequently, the cells (organelles and membranes) are wrecked mechanically by ice crystals, leading to Demise via cell lysis. From your Cambridge English Corpus The crystals ended up Utilized in the initial or 2nd orders of reflection. Through the Cambridge English Corpus Inside our 8xperiments, the crystals were being cubes which has a base spot of eight e mm. From your Cambridge English Corpus Vibration-assisted intermolecular hydrogen tunneling in photoreactive doped molecular crystals click here : effect of temperature and force.