其它描述：《庶物异名疏》中说： �?水精出大秦国，一名黎�?�?。结晶完整的水晶晶体，就如参差交错的马齿，所以人们又叫它马牙石。先民们最早用它研磨成眼镜片，因而送它一个眼镜石的绰号。水晶有通称，也有俗称。广州一带称水晶叫晶玉，又名鱼脑冻；江苏东海县山民发现水晶会 �?窜火�?�?，于是给它起个放光石的俗名。世间一物多名，不足为奇，而像水晶拥有这么多的别称，实不多见。瞧，从水玉、水碧、白玉、玉瑛、水精石英、黎难、晶玉到菩萨石、马牙石、眼镜石、放光石、千年冰、高山冻、鱼脑冻等等，简直构成一部奇石鉴赏史。
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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。
③次生包裹体：指主体水晶形成后，由于环境的变化使得主晶周围的一些物质沿裂隙进入到其内部而形成的包裹体。形成的原因有出熔作用、裂隙的结晶化、以及放射性元素破坏的作用等。水晶典型的次生包裹体有胶花水晶中的氧化铁充填物等。
Additionally, there are quite a few components that resemble crystals but are literally polycrystals. Polycrystals variety when microscopic crystals fuse alongside one another to type a reliable. These elements never consist of purchased lattices.
Not all crystals kind in h2o, but nearly all crystals kind the same way, atoms arrive jointly and turn into a uniformed cluster. The method usually takes as small as a few days to probably a thousand a long time. Pure crystals that originate from the Earth type exactly the same way.
解理：无解理。所谓解理是指矿物被打击时，沿一定方向有规则地裂开形成光滑平面的性质。根据解理的程度可以分为五类：极完全解理、完全解理、中等解理、不完全解理和无解理，水晶属于无解理。
Hexagonal �?Characterized by 4 axes, a few of that are equivalent in length and intersect at a hundred and twenty degrees, having a fourth axis perpendicular to the other 3.
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�?。
say cheese a thing that someone who is getting a photograph of you lets you know to mention so that the mouth will make the shape of the smile
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”。
Fig. 1: Schematic of crystal formation from developing blocks composed of a particle Main along with a shell of DNA ligands attached into the particle floor.
Crystals are classified generally speaking categories, like insulators, metals, semiconductors, and molecular solids. One crystal of the insulator is normally transparent and resembles a piece of glass. Metals are shiny Until they may have rusted. Semiconductors are sometimes click here shiny and often clear but are by no means rusty. Many crystals can be classified as only one form of reliable, while others have intermediate behaviour. Cadmium sulfide (CdS) is often organized in pure variety and is an excellent insulator; when impurities are added to cadmium sulfide, it becomes an interesting semiconductor.
Binary crystals are found in many structures. Some pairs of components sort multiple composition. At room temperature, cadmium sulfide could crystallize either from the zinc blende or wurtzite construction. Alumina also has two feasible buildings at home temperature, α-alumina (corundum) and β-alumina. Other binary crystals show distinct constructions at diverse temperatures. One of the most complicated crystals are Those people of silicon dioxide (SiO2), which has 7 different constructions at numerous temperatures and pressures; the commonest of such structures is quartz.