5 Easy Facts About Crystal Described
5 Easy Facts About Crystal Described
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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。
看原料：选料精良的水晶制品，应看不到胶口及棉絮；质地纯净、光润、晶莹为好。
这种水晶观赏石特指水晶晶簇，它是众多单晶体集中生长在一起的晶体组合。晶簇以其晶莹剔透、独特造型而享誉水晶赏石界。
Learn the way The form on the crystals identify the several minerals into familiesMinerals crystallize In accordance with one of 7 motifs, called crystal techniques.
Incorporate to term checklist Incorporate to phrase checklist [ C/U ] clear rock that appears like ice, or even a piece of it
Crystals might be grown underneath average conditions from all 92 Obviously occurring things apart from helium, and helium might be crystallized at lower temperatures by utilizing twenty five atmospheres of force.
仿制钛晶树水晶：钛晶是水晶里价格最昂贵的，造假者当然也不会放过这么好的产品。天然的环境下，在水晶里能生长个像树一样的钛晶，完全是可能的，只是这样的货很少，那我们的造假专家是如何做的呢，白水晶底下打个洞，激光打点成板状的钛晶进去，就这样这块水晶的身价就能飙升几十倍。往往有的钛晶戒面，会采用将钛晶部位割成板状，与圆面的水晶粘合的方法来制作。
22Working from what The usa currently understands about alone, the bureau's authorities and various demographers offer an irresistible, if clouded, crystal ball among their visions.
say cheese something which somebody who is using a photograph of you lets you know to state so that your mouth makes the shape of the smile
国家还并未给天然水晶提供一个等级划分的具体标准，水晶品种繁杂，每一品种都有他不同的评判标准。
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。
crystal Alteration is variable: absent in lots of crystals, in Many others creating dense sericite aggregates which may display some recrystallization results to supply coarser-grained white mica. With the Cambridge English Corpus The tridymite crystals are rectangular or wedge-formed and are occasionally arranged in aggregates. With the Cambridge English Corpus On top of that, haloarchaeal cells have been embedded inside of salt crystals under laboratory conditions and subsequently analysed by gentle microscopy. From your Cambridge English Corpus The white clouds (typically sparse) had been also extensively regarded as staying composed of little crystals of h2o ice, relatively like cirrus inside our environment. Within the Cambridge English Corpus They may be present in evaporite salt lakes and may be trapped in salt crystals throughout evaporation. In the Cambridge English Corpus As a result, the cells (organelles and membranes) are destroyed mechanically by ice crystals, bringing about death as a result of mobile lysis. With the Cambridge English Corpus The crystals were used in the initial or 2nd orders of reflection. From the Cambridge English Corpus Inside our 8xperiments, the crystals have been cubes using a base space of 8 e mm. From check here your Cambridge English Corpus Vibration-assisted intermolecular hydrogen tunneling in photoreactive doped molecular crystals : result of temperature and strain.