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。
12He tried using once more in a number of other metropolitan areas and succeeded with Crystal Caramels.他又在其他几个城市再次尝试，并成功制出了水晶焦糖。
These improvements involve unique structures with programmable lattice symmetries and nicely-described crystal patterns, responsive supplies that leverage the intrinsic Homes of nucleic acids to govern structures on desire, nanoparticle superlattices grown epitaxially from surfaces and colloidal crystals which provide insights into mild–make any difference interactions. Hunting forward, we problem the community to leverage the remarkable structural Regulate afforded by crystal engineering with DNA to synthesize courses of practical resources that thrust beyond what has been probable with In a natural way transpiring crystalline products or People made by much more common methods.
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。
根据美国已经了解的情况，统计局的专家和其他人口统计学家在他们的视野中提供了一个不可抗拒的水晶球。
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时尚的收藏爱好者喜欢收藏天然水晶，却常常因为在市场上面对大量的合成水晶看走了眼。市面上的水晶：
损伤是指水晶由于加工或不小心摔掉、碰撞等原因，人为造成的损坏。它可以是破口，也可以是凹坑等。
One of the binary crystals, the easiest structures to visualise are Those people with equivalent quantities of The 2 types of atoms. The composition of sodium chloride is based on a cube. To assemble the lattice, the sodium and chlorine atoms are put on alternate corners of a cube, along with the construction is repeated (Determine 3B).
say cheese a thing that someone who is using a photograph of you lets you know to say so that your mouth can make the shape of a smile
In the Cambridge English Corpus We say the chain topology within the high w area acts as being the proverbial ' scratch-on-theglass ' needed inside the natural and organic chemistry laboratory to create crystals. From the Cambridge English Corpus Constant-force and temperature molecular-dynamics simulations of crystals with the lecithin fragments - glycerylphosphorylcholine and dilauroylglycerol. Within the Cambridge English Corpus Together with these, dust particles have already been noticed in lower-temperature plasmas, like These Employed in plasma processing and plasma crystals. In the Cambridge English Corpus The final Element of the e-book concentrates on peculiarities of strongly coupled dusty plasmas, such as the development of dust crystals and related desirable forces. Within the Cambridge English Corpus Full characterization of harm threshold in titanium doped sapphire crystals with nanosecond, picosecond, and femtosecond laser pulses. From the Cambridge English Corpus Unbroken crystals are euhedral; rounded, or more irregular, Principal morphologies were not observed. From your Cambridge English Corpus See all samples of crystal These illustrations are from corpora and from resources online. Any thoughts during the illustrations do not signify the impression from the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
Crystals are not simply renowned for their physical physical appearance, but diverse crystals of various products and formations can lead to an enormous assortment of employs and more info physical Qualities.
压电性：水晶晶体受到压力时会产生电荷；反之，受到电压作用时，晶体会产生频率很高的振动。水晶具有可使压力与电荷相互转移的性能，称压电性。
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。