轴性、光性：一轴晶正光性。正交偏光下所看到的一轴晶干涉图是独特的，其黑十字臂未达中心，形成中空的图案，俗称牛眼干涉图。中心部分通常为淡绿色或淡粉色。
A basic plan in crystal buildings is the device mobile. It is the smallest device of quantity that permits equivalent cells to be organized alongside one another to occupy all offered Place. The geometrical foundation of all crystals would be the lattice. A lattice may be seen as an everyday and infinite arrangement of factors or atoms, in which Every point or atom has An analogous surrounding atmosphere.
一般而言，紫晶和黄晶是水晶中价值较高的品种。两者进一步的分级是据其颜色的深浅，颜色较深的为A级，稍浅的为B级。一般颜色较深的价格高，但要以不深暗为标准。颜色包括两种，一种是水晶本身的颜色，另一种是内部包裹体的颜色。水晶本身的颜色要艳丽、纯正，分布要均匀，不能太深或太浅，如澳州玉、蓝玉髓、紫晶、黄水晶，其价格就高。无色的水晶内含包裹体的颜色艳丽，其价格也高，如钛晶、绿幽灵、红兔毛。紫水晶一般以稍有云状物、颜色深紫、晶体通透的为上品。
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。
你们都知道，拿起一个水晶棱镜，让一束阳光通过它，就会得到一个光谱，看起来就像一条连续的彩虹色带。
根据包裹体和主晶宝石之间形成的先后关系可将水晶的包裹体划分以下三种类�?
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。
13Nearly all computer systems incorporate a quartz-crystal clock to manage their Procedure.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。
crystal The recently crystallized quartz grains are characterised by elongate crystals oriented oblique to your shear band margins, defining a typical grain-condition foliation. 来自 Cambridge English Corpus We are saying the chain topology during the significant w area functions because the proverbial ' scratch-on-theglass ' required during the natural chemistry laboratory to help make crystals. 来自 Cambridge English Corpus The age scatter among the the individual crystals could replicate incorporation of xenocrysts from before magmatic pulses or protoliths. 来自 Cambridge English Corpus The clinopyroxene kinds neutral to pale brown, subhedral to anhedral crystals, sometimes that contains inclusions of plagioclase microlaths and opaque phases.
The basic units of solids are possibly atoms or atoms that have merged into molecules. The electrons of the atom move in orbits that variety a shell structure across the nucleus. The shells are stuffed in a systematic buy, with each shell accommodating only a little variety of electrons. Unique atoms have distinctive quantities of electrons, which can be dispersed in a characteristic Digital construction of crammed and partially crammed shells.
正常的水晶在生长时，多可以发现和柱形尖端棱线平行的生长纹（growth strains）。由于在地底、岩洞中的生长空间多狭窄，尤其在遇到地震时，或地壳变动时，甚至容易遭到其他矿石的挤压，常常会压迫产生不同的「晶面」。还有，当水晶还是在液态状的时候，常常也会包覆着其他的矿石、泥灰一起结晶成长，如金红石（稍后变成发晶）、火山泥灰（稍后变成幻影水晶）等等。所有的这些，都是「自然的一部分」，请不要视为「瑕疵」。
玉石纹理如果能形成美丽的花纹、图案，其价格就高，如玛瑙内红白相间的色带有规律地排列，形成缠丝玛瑙时，碧玉中的不均匀颜色形成一种风景图案时，材料的价值将提高。当水晶内包裹体形成美丽的图案时，如幽灵水晶、风景水晶，或者针状包裹体呈束状排列时，其价值都高于普通的水晶。图案越美观、越有意境越好。
One more sort of crystalline carbon relies over a molecule with 60 carbon atoms identified as buckminsterfullerene (C60). The molecular form is spherical. Each individual carbon is bonded to 3 neighbours, as in graphite, plus the spherical shape is reached by a combination of twelve rings with five sides and 20 rings with six sides. Identical constructions had been initial visualized via the American architect R. Buckminster Crystal Fuller for geodesic domes.