About Crystal
About Crystal
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Not all crystals are Similarly crystalline. There are frequently impurities, and the ionic & covalent amongst molecules can generate vastly diverse buildings outside of a similar content. A terrific illustration of this are diamonds and graphene.
23Sometimes, having said that, the crystal form of the silicate inclusions is noticed to resemble far more intently the internal framework of diamond than that of other silicate minerals.然而，有时观察到硅酸盐包裹体的晶体形态比其他硅酸盐矿物更接近金刚石的内部结构。
Chemical Bonds The kinds of chemical bonds formed concerning atoms or groups of atoms in crystals count on their measurement and electronegativity. You will discover four groups of crystals as grouped by their bonding:
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。
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。
They can at some point come up with a pleasant little uniform cluster of atoms, this is the entire process of rising crystals. The more they could appear jointly, the greater of a formation will be noticeable Crystal on the bare eye. Scientists can determine what mineral They're considering by how the crystals form.
石英：《广雅》称水晶叫石英，色白如莹者又叫白。为附的异形字。司马相如《子虚赋》就�?�?雌黄�?�?之句。苏林解释：�?�?，白石英�?”。
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水晶是有成色等级之分，影响水晶价位的因素很多，不像钻石以4C就可以判定，所以大家要多听多看多比较才能真正辨别出来。一般的标准是水晶石越大越好，越透越好，颜色越娇嫩越好，形状越典型越好。不过最重要还是自己喜欢，而选购时辨识真伪的方法大致有下列几种：
⑤化学稳定�?非常好，在常温下仅溶解于氢氟酸，不溶解于其它各类酸、碱。在高温高压条件下可溶解于碳酸钠溶液中。
15The trick to a great thermoelectric product is really a crystal construction in which electrons can flow freely.制造一种好的热电材料的关键是，需要一种电子可以自由流动的晶体结构。
Crystals are not just renowned for their Actual physical look, but distinctive crystals of various elements and formations may result in a vast assortment of uses and physical Homes.
水晶饰品越来越受到人们的喜爱。中国、日本、韩国、美国等国家的人们还对水晶球情有独钟，喜欢将它们摆在家里或办公室里，认为水晶球有灵性，能保平安，带来财运。不过天然水晶不像看起来那么晶莹剔透，它也有瑕疵，我们在选购饰品的时候要注意。此外，我们还要掌握水晶的评价依据、选购方法，这样可以帮助我们在琳琅满目的水晶饰品中选到心仪的水晶。
Binary crystals are present in lots of buildings. Some pairs of aspects variety multiple composition. At home temperature, cadmium sulfide may crystallize possibly during the zinc blende or wurtzite composition. Alumina also has two doable constructions at space temperature, α-alumina (corundum) and β-alumina. Other binary crystals exhibit various structures at distinct temperatures. Among the many most elaborate crystals are These of silicon dioxide (SiO2), which has 7 diverse structures at many temperatures and pressures; the most typical of such buildings is quartz.