天然的水晶一般都会有絮状（绵绺），也就是大家俗称的瑕疵，这是液体水落石出和二氧化碳的小孔穴，而人工合成的水晶就不会有这样的特征。

A basic concept in crystal structures is definitely the unit cell. It is the smallest device of volume which allows equivalent cells to become arranged collectively to occupy all offered House. The geometrical foundation of all crystals would be the lattice. A lattice might be considered as an everyday and infinite arrangement of factors or atoms, where Each and every point or atom has an identical bordering environment.

景观水晶，就是包裹体组成各种造型特异的水晶，有的似山水，有的似人物，有些像文字，有些像动物，植物，器物等等。

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。

There's also several materials that resemble crystals but are actually polycrystals. Polycrystals sort when microscopic crystals fuse with each other to type a sound. These products usually do not include requested lattices.

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 past, and I used to be surprised to check out it all over again: the many openings were being sewed up by skinny and white thread and so they appeared such as the ice crystal on winter's branches in the north.

市场上有很多人把熔炼水晶也叫做合成水晶，那是不准确的，一般都是以水晶废料为原料在高温高压下熔炼出来的，而不是结晶成的，不具备水晶的晶体特性，所以不能把熔炼水晶与合成水晶混为一谈；但是熔炼水晶耐高温，用优质二氧化硅熔炼成的熔炼水晶可以做成实用产品比如水晶杯、烤盘、茶具等，实际上一代伟人毛泽东主席的水晶棺就是选用东海优质水晶熔炼而成的。

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�?。

crystal The freshly crystallized quartz grains are characterised by elongate crystals oriented oblique for the shear band margins, defining an average grain-condition foliation. 来自 more info Cambridge English Corpus We are saying the chain topology in the superior w location acts as being the proverbial ' scratch-on-theglass ' desired from the organic and natural chemistry laboratory to create crystals. 来自 Cambridge English Corpus The age scatter among the the individual crystals may possibly replicate incorporation of xenocrysts from earlier magmatic pulses or protoliths. 来自 Cambridge English Corpus The clinopyroxene forms neutral to pale brown, subhedral to anhedral crystals, once in a while containing inclusions of plagioclase microlaths and opaque phases.

天然性是水晶观赏石的基本特性。通常整体造型水晶矿物不饰雕琢就具备很高的观赏价值，但是包裹体水晶观赏石经常需要适当打磨抛光，这样更方便观赏水晶内部的包裹体。

You will discover other minerals and molecules which will variety these crystal lattices. Snowflakes really are a classic example of a roughly symmetric and geometrically patterned framework from ice crystals, and gemstones of all varieties are usually crystals.

The structure from the sodium atoms alone, or the chlorine atoms by itself, is fcc and defines the unit cell. The sodium chloride construction Hence is made up of two interpenetrating fcc lattices. The cesium chloride lattice (Determine 3A) relies over the bcc construction; each and every other atom is cesium or chlorine. In such a case, the unit cell is often a cube. The 3rd essential composition for AB

对于紫水晶黄水晶这样的单色水晶，通常要观察它的二色性，即使是最顶级的紫水晶黄水晶也是有色差的，通过这个方法可以鉴别是否加色。