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。

Bismuth (Bi) appears to generally be a metallic, but the volume of electrons accessible for electrical conduction is analogous to that of semiconductors. In reality, bismuth known as a semimetal. Molecular solids are generally crystals fashioned from molecules or polymers. They may be insulating, semiconducting, or metallic, depending on the type of molecules during the crystal. New molecules are repeatedly currently being synthesized, and many are created into crystals. The volume of different crystals is enormous.

4Without a crystal ball, It is really unattainable to say where by we are going to be next yr.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》

诗中道出一段唐代由盛变衰的史实。玄宗末年，杨贵妃得宠，三姐妹并封为国夫人。他们养尊处优，奢华至极，仆人用水晶盘将珍馐佳肴端到宴席上，美人觉得没有口味，懒得动筷子。作为“诗圣”作为“史诗”，紫驼一段写饮食之精美，不空发议论，只尽情揭露事实，无一刺讥语，无一慨叹声，却使人于以外得之：此诗之善讽也。以史为鉴，这样的世道，这样的人物，国家不出“安史之乱”那样的大祸反倒不正常了。

《全唐诗》卷七八五载《白雪歌》：“鸟啄冰潭玉镜开，风敲檐溜水晶折。”

, has the exact same structure, but There's two selections for choosing the holes the atoms will occupy. The 3rd layer might be positioned in excess of the atoms of the first layer, creating an alternate layer sequence A

水晶的评价标准和高端宝石有所不同。多数高端宝石把颜色放在评价的第一位，而对水晶来说，颜色和净度（水晶行业称作晶体）是近乎同等重要的因素：

发晶：无色、浅黄、浅褐等，可因含金红石常呈金黄、褐红等色，含电气石常呈灰黑色；含阳起石而呈灰绿色。

包裹体常见有固相、固液气三相组合、空洞以及双晶、色带等。水晶中典型的同生包裹体有自形的锐钛矿、气液两相包体等。

Crystals with clear flat faces are named euhedral crystals, whilst Those people lacking described faces are known as anhedral crystals. Crystals consisting of ordered arrays of atoms that aren't usually periodic are named quasicrystals.

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”。

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The C60 molecules, also known as buckyballs, are really strong and Virtually incompressible. Crystals are shaped such the balls are arranged within an fcc lattice which has a 1-nanometre spacing concerning the centres of adjacent balls. The equivalent C70 molecule has The form of the rugby ball; C70 molecules also variety an fcc crystal when stacked collectively. The sound fullerenes click here sort molecular crystals, with weak binding—furnished by van der Waals interactions—between the molecules.