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。
Bismuth (Bi) appears for being a metal, but the volume of electrons readily available for electrical conduction is comparable to that of semiconductors. In reality, bismuth is termed a semimetal. Molecular solids are generally crystals formed from molecules or polymers. They are often insulating, semiconducting, or metallic, according to the kind of molecules in the crystal. New molecules are continuously becoming synthesized, and several are created into crystals. The number of various crystals is big.
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。
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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。
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 surprised to see it all over again: all of the openings were sewed up by skinny and white thread plus they looked like the ice crystal on Winter season's branches from the north.
The elements are discovered in a variety of crystal packing preparations. The commonest lattice buildings for metals are All those acquired by stacking the atomic spheres into one of the most compact arrangement.
Q.four. What's the difference between atomic structure read more and crystal construction? Ans. The main distinction between atomic construction and crystal construction lies in their definitions: atomic structure refers to how atoms are arranged inside of a single molecule or perhaps a cluster of molecules, While crystal composition considerations the precise arrangement of atoms inside of a strong substance.
多色�?无色水晶没有多色性。有色水晶有弱到强的多色�?表现为体色的不同深浅。
Solitary crystals of metals are comfortable and malleable, although polycrystalline metals are more durable and much better and tend to be more helpful industrially. Most polycrystalline elements is often built into significant one crystals just after extended heat cure. Before blacksmiths would heat a piece of metal to make it malleable: warmth makes a few grains expand significant by incorporating scaled-down types. The smiths would bend the softened metal into form after which pound it awhile; the pounding would allow it to be polycrystalline all over again, rising its energy.
Crystals are not only renowned for his or her Actual physical look, but unique crystals of various resources and formations may result in a vast range of takes advantage of and physical Attributes.
⑦双色水晶：一种紫色和黄色共存一体的水晶，紫色、黄色之间界限较明显，分别占据晶块的一部分。
Fig. five: The chance to recognize defined crystal behaviors is depending on the symmetry engineering technique.