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。
Bismuth (Bi) seems to be a steel, but the volume of electrons readily available for electrical conduction is comparable to that of semiconductors. In reality, bismuth is called a semimetal. Molecular solids are frequently crystals formed from molecules or polymers. They may be insulating, semiconducting, or metallic, depending on the sort of molecules during the crystal. New molecules are consistently getting synthesized, and a lot of are made into crystals. The amount of unique crystals is gigantic.
A fundamental strategy in crystal structures will be the device cell. It's the smallest device of volume that allows equivalent cells being stacked with each other to fill all Area. By repeating the sample of your device mobile again and again in all directions, the entire crystal lattice might be created. A dice is the simplest illustration of a unit cell. Two other illustrations are proven in Figure 1. The very first could be the unit mobile to get a experience-centred cubic lattice, and the next is for a body-centred cubic lattice. These constructions are explained in the subsequent paragraphs.
诗中道出一段唐代由盛变衰的史实。玄宗末年，杨贵妃得宠，三姐妹并封为国夫人。他们养尊处优，奢华至极，仆人用水晶盘将珍馐佳肴端到宴席上，美人觉得没有口味，懒得动筷子。作为“诗圣”作为“史诗”，紫驼一段写饮食之精美，不空发议论，只尽情揭露事实，无一刺讥语，无一慨叹声，却使人于以外得之：此诗之善讽也。以史为鉴，这样的世道，这样的人物，国家不出“安史之乱”那样的大祸反倒不正常了。
水胆水晶，包括气态，液态，固态，有时候可以同时多态并存，无色居多，个别情况下可见红色，绿色，黄色，蓝色，黑色等。
第二种是“半包裹体”，在水晶结晶以后，由于受到地球引力的影响而产生的裂隙，晶体外的一些物质通过水晶的裂隙渗透到水晶内部，一部分包裹于水晶之中另一部分露于水晶之外。我们可以看到物质渗进水晶的裂迹，常被称为“通道”，这种包裹体所形成的景象相对地较受自然环境和时间的影响，相应的价值也比较�?。
水晶原石观赏石，从字面意义理解：观赏水晶石的原貌，即经过抛光去皮后的包裹体水晶和原色水晶，不需雕刻不求象形就具有非常高的观赏价值和收藏价值。此类水晶观赏石对质地要求非常之高，水晶晶体通透干净，颜色艳丽，意境鲜明深刻的价值就高，它的价值特点就好比钻石，实实在在石头本身的价值。
To be a hot Remedy cools or even a saturated Resolution evaporates, particles draw shut enough for chemical bonds to variety. Crystals may form from deposition directly from the fuel period. Liquid crystals have particles oriented within an arranged fashion, like reliable crystals, however can easily stream.
本词条由中国科学院大学地球与行星科学学院、中国科学院地质与地球物理研究所 参与编辑并审核，经科普中国·科学百科认�?。
幽灵水晶，分绿幽灵，红幽灵，白幽灵等，主要组成为绿泥石，其中绿幽灵属于珍贵品种。
看孔眼：对于缀穿水晶制品（如项链、手链、佛珠），要看孔眼是否平直，孔的粗细是否均匀，有无细小裂纹。孔壁必须清澈透明，无“白痕”。
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。
水精：水晶为何称为水精，《广雅》有巧解：�?水之精灵�?”；李时珍则说：�?莹洁晶光，如水之精英 ”。细加考究，此称还蕴含浓厚的宗教意味呢。水精一名，最初见于佛书，后汉支曜翻译的《具光明定意经》说：�?其所行道，色如水�?�?。
crystal Alteration is variable: absent in lots of crystals, in Many others developing dense sericite aggregates which may show some recrystallization results to supply coarser-grained white mica. Through the Cambridge English Corpus The tridymite crystals are rectangular or wedge-formed and are occasionally organized in aggregates. Within the Cambridge English Corpus In addition, haloarchaeal cells were being embedded in salt crystals under laboratory situations and subsequently analysed by mild microscopy. From the Cambridge English Corpus The here white clouds (typically sparse) were also greatly regarded as staying composed of tiny crystals of h2o ice, relatively like cirrus in our ambiance. Through the Cambridge English Corpus They may be found in evaporite salt lakes and may be trapped in salt crystals during evaporation. Within the Cambridge English Corpus Therefore, the cells (organelles and membranes) are destroyed mechanically by ice crystals, bringing about Loss of life as a result of mobile lysis. In the Cambridge English Corpus The crystals ended up used in the first or second orders of reflection. Through the Cambridge English Corpus Within our 8xperiments, the crystals ended up cubes with a base place of 8 e mm. Within the Cambridge English Corpus Vibration-assisted intermolecular hydrogen tunneling in photoreactive doped molecular crystals : effect of temperature and tension.