诗中“胜美玉”，“过冰清”，写出水晶的质地美，而“亦欲应时明”则描绘出水晶充满灵性的动态美，耐人寻味。罗维是有独特眼光，懂得水晶真谛，第一个称赞水晶超过美玉的伟大诗人。他的认识已被千年之后的科学理论所证实；以水晶为直接吟咏对象的诗篇还有：
Cite While each and every effort and hard work continues to be manufactured to comply with citation style policies, there may be some discrepancies. Make sure you seek advice from the suitable type handbook or other sources Should you have any thoughts. Select Citation Type
看做工：水晶制品加工过程分为两种，即磨工和雕工。如水晶项链、手链、耳环等属于研磨品；观音像、内画鼻烟壶等属于雕刻品。
Fig. 3: A library of lattice symmetries might be accessed by switching the particle Main and DNA shell.
You will also find quite a few materials that resemble crystals but are actually polycrystals. Polycrystals kind when microscopic crystals fuse with each other to variety a strong. These components don't include ordered lattices.
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。
30Three times went earlier, and I used to be stunned to view it once again: all of the openings were sewed up by slender and white thread and they seemed like the ice crystal on Wintertime's branches within the north.
Crystals are practically nothing much more than an requested arrangement of molecules or atoms. Crystals come in many alternative sizes and shapes, and every one has diverse traits. What they are created of determines how it will kind.
Metallic Crystals: Metals normally kind metallic crystals, exactly where a few of the valence electrons are totally free to move all through the lattice. Iron, for instance, can type distinct metallic crystals.
crystal The recently crystallized quartz grains are characterized by elongate crystals oriented oblique towards the shear band margins, defining a normal grain-condition foliation. 来自 Cambridge English Corpus We say the chain topology in the significant w area functions as being the proverbial ' scratch-on-theglass ' desired inside the organic chemistry laboratory get more info for making crystals. 来自 Cambridge English Corpus The age scatter amid the individual crystals may mirror incorporation of xenocrysts from previously magmatic pulses or protoliths. 来自 Cambridge English Corpus The clinopyroxene forms neutral to pale brown, subhedral to anhedral crystals, sometimes made up of inclusions of plagioclase microlaths and opaque phases.
用手去触摸水晶，天然水晶通常温度要比人造水晶的要凉的多；用眼观察，天然水晶通常有棉絮状的包裹体，这个是人造水晶所没有的。
You'll find just a few distinct device-mobile shapes, so many alternative crystals share an individual unit-mobile variety. A crucial attribute of a unit mobile is the amount of atoms it has. The full number of atoms in your complete crystal is definitely the variety in Each individual mobile multiplied by the quantity of device cells. Copper and aluminum (Al) each have just one atom per unit cell, whilst zinc (Zn) and sodium chloride have two. Most crystals have only a few atoms per unit cell, but there are numerous exceptions. Crystals of polymers, by way of example, have Countless atoms in each unit cell.
Crystals are classified on the whole groups, which include insulators, metals, semiconductors, and molecular solids. Only one crystal of an insulator is generally clear and resembles a piece of glass. Metals are shiny Until they have got rusted. Semiconductors are occasionally shiny and in some cases clear but are never rusty. Numerous crystals might be categorized as an individual type of strong, while some have intermediate conduct. Cadmium sulfide (CdS) is often ready in pure sort and is a wonderful insulator; when impurities are added to cadmium sulfide, it becomes an interesting semiconductor.
水晶的价值根据品质、块体的大小、美感和产量多少的不同相差较大。遇到好的天然水晶要敢于下手，但好的水晶一般大家都想得到，值与不值，就要看经验了。由于天然水晶的开采和制作原因，没有瑕疵的水晶很难得到，纯净的饰品要达到与合成水晶媲美的品质，实在是很难得。另外，由于水晶的特性，在佩戴过程中，也会改变其等级，比如因为某种原因，有可能会逐渐产生较大裂纹。