Crystal Secrets
诗中“胜美玉”，“过冰清”，写出水晶的质地美，而“亦欲应时明”则描绘出水晶充满灵性的动态美，耐人寻味。罗维是有独特眼光，懂得水晶真谛，第一个称赞水晶超过美玉的伟大诗人。他的认识已被千年之后的科学理论所证实；以水晶为直接吟咏对象的诗篇还有：按照透明度指标，水晶越透明，价格越高，好的透明的水晶加工出的成品晶莹剔透、光辉耀眼。透明度高的水晶能提升颜色的艳丽，否则显得呆板无灵性。光学水晶要求全透明、无双晶、无杂质。工艺水晶要求透明、少裂、少瑕疵。熔炼水晶要求透明，可有较多裂纹。三者价值依次降低，熔炼水晶只能作为熔炼水晶玻璃的原料。在工艺水晶中，晶体较大的，可用来做水晶眼镜和雕刻高档工艺品，因而价格较高。
天然水晶是不可再生资源，随着开发的深入，天然水晶存量已越来越少，为了可持续发展，东海县政府早就制定了保护本地资源，鼓励开发海外水晶资源的政策，但是，海外资源也越来越少，很多国家都提高了开采和出口天然水晶的门槛，进入东海市场的外国水晶价格连年暴涨，其中观赏水晶比普通水晶涨价更快。
Large crystals of diamond are useful gemstones. The crystal has other intriguing Houses; it has the highest seem velocity of any good and is the greatest conductor of warmth. Other than diamond, the other widespread kind of carbon is graphite, that's a layered content. Every carbon atom has 3 coplanar near neighbours, forming an arrangement known as the honeycomb lattice. Three-dimensional graphite crystals are received by stacking very similar levels.
How Crystals Type The process of forming a crystal known as crystallization. Crystallization commonly happens every time a solid crystal grows from a liquid or solution.
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时尚的收藏爱好者喜欢收藏天然水晶，却常常因为在市场上面对大量的合成水晶看走了眼。市面上的水晶：
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�?。
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With the Cambridge English Corpus We say the chain topology while in the superior w area functions as being the proverbial ' scratch-on-theglass ' desired in the natural chemistry laboratory to create crystals. From your Cambridge English Corpus Consistent-stress and temperature molecular-dynamics simulations of crystals from the lecithin fragments - glycerylphosphorylcholine and dilauroylglycerol. From your Cambridge English Corpus As well as these, dust particles have been noticed in low-temperature plasmas, like People Utilized in plasma processing and plasma crystals. With the Cambridge English Corpus The final A part of the reserve focuses on peculiarities of strongly coupled dusty plasmas, like the formation of dust crystals and involved appealing forces. In the Cambridge English Corpus Comprehensive characterization of injury threshold in titanium doped sapphire crystals with nanosecond, picosecond, and femtosecond laser pulses. Within the Cambridge English Corpus Unbroken crystals are euhedral; rounded, or more irregular, Most important morphologies were not noticed. With the Cambridge English Corpus See all samples of crystal These examples are from corpora and from here sources on the internet. Any views within the examples do not symbolize the view with the Cambridge Dictionary editors or of Cambridge College Press or its licensors.
You'll find only a few distinctive unit-mobile styles, so a number of crystals share just one device-mobile kind. A vital characteristic of the unit mobile is the number of atoms it consists of. The entire amount of atoms in the entire crystal will be the variety in Just about every mobile multiplied by the number of unit cells. Copper and aluminum (Al) Just about every have a person atom for every device mobile, whilst zinc (Zn) and sodium chloride have two. Most crystals have just a few atoms per device cell, but there are several exceptions. Crystals of polymers, one example is, have Countless atoms in each device cell.
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。
Tetragonal �?Characterised by three mutually perpendicular axes, two of that are equal in size, while the 3rd is for a longer period or shorter and perpendicular to the other two.