对这类水晶晶簇观赏石的欣赏与评价，主要是强调晶体的完整、品种的名贵（如紫水晶、烟晶、发晶等）、造型奇特、含有名贵晶体（如辰砂、辉锑矿等）伴生等。晶簇产于矿床晶洞中，长相完美的并不多见，要完整无损地采集下来，又比较困难，故而采集起来代价较大，精品晶簇价值也就昂贵了。
无色水晶以晶莹美丽、洁净透明着称。衡量无色水晶主要看它的纯度，越纯、越透明越好。干净的、无瑕疵的、杂质少的价值就高。无色的水晶如果很脏，就没有利用价值。
4Without a crystal ball, It can be not possible to say the place we are going to be following calendar year.不用水晶球预卜未来，我们说不准明年处境如何呀。《牛津词典》
看原料：选料精良的水晶制品，应看不到胶口及棉絮；质地纯净、光润、晶莹为好。
看抛光：抛光的好坏直接影响到水晶制品的身价。抛光分为软抛光与硬抛光。
发晶，包括钛晶，铜顺发，绿发晶，黑发晶，银发晶，杂色发晶，其中钛晶最珍贵，少数钛晶价值可比钻石，红宝石和蓝宝石以及祖母绿。
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。
Crystals are absolutely nothing greater than an ordered arrangement of molecules or atoms. Crystals can be found in a variety of sizes and shapes, and each has various properties. The things they are made of determines how it can kind.
13Nearly all computers comprise a quartz-crystal clock to manage their operation.几乎所有的计算机都有一个石英晶体时钟来调节它们的运行。
广义的包裹体是指宝石内部含有的与主晶宝石化学成分、物理性质等不同的物质。
15The trick to a good thermoelectric content is really a crystal framework by which electrons can stream freely.制造一种好的热电材料的关键是，需要一种电子可以自由流动的晶体结构。
You will find only some different device-mobile shapes, so many different crystals share an individual device-mobile kind. A crucial characteristic of a unit cell is the quantity of atoms it contains. The entire number of atoms in all the crystal is the range in Each individual mobile multiplied by the number of device cells. Copper and aluminum (Al) each have 1 atom per unit cell, while zinc (Zn) and sodium chloride have two. Most crystals have just a few atoms per unit cell, but there are numerous exceptions. Crystals of polymers, for instance, have Many atoms in Every single device mobile.
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crystal Alteration is variable: absent in several crystals, in Other individuals manufacturing dense sericite aggregates which can exhibit some recrystallization outcomes read more to produce coarser-grained white mica. Within the Cambridge English Corpus The tridymite crystals are rectangular or wedge-shaped and are sometimes arranged in aggregates. With the Cambridge English Corpus Moreover, haloarchaeal cells have been embedded inside of salt crystals beneath laboratory ailments and subsequently analysed by light-weight microscopy. From the Cambridge English Corpus The white clouds (normally sparse) have been also extensively considered becoming made up of little crystals of water ice, instead like cirrus within our environment. From the Cambridge English Corpus They are really located in evaporite salt lakes and will be trapped in salt crystals through evaporation. Within the Cambridge English Corpus Therefore, the cells (organelles and membranes) are wrecked mechanically by ice crystals, bringing about death by cell lysis. Through the Cambridge English Corpus The crystals ended up used in the primary or 2nd orders of reflection. With the Cambridge English Corpus Inside our 8xperiments, the crystals were cubes using a foundation region of 8 e mm. In the Cambridge English Corpus Vibration-assisted intermolecular hydrogen tunneling in photoreactive doped molecular crystals : result of temperature and strain.