5 Essential Elements For Crystal
5 Essential Elements For Crystal
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看颜色：即使在同一种类的水晶中，它的不同部位的纹理、色泽也各式各有千秋。属于单色的，要色度均匀；在同一块水晶上有深浅的，则要求其色调纹路美观大方。
23Sometimes, having said that, the crystal form of the silicate inclusions is noticed to resemble far more closely The interior composition 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。
一般而言，紫晶和黄晶是水晶中价值较高的品种。两者进一步的分级是据其颜色的深浅，颜色较深的为A级，稍浅的为B级。一般颜色较深的价格高，但要以不深暗为标准。颜色包括两种，一种是水晶本身的颜色，另一种是内部包裹体的颜色。水晶本身的颜色要艳丽、纯正，分布要均匀，不能太深或太浅，如澳州玉、蓝玉髓、紫晶、黄水晶，其价格就高。无色的水晶内含包裹体的颜色艳丽，其价格也高，如钛晶、绿幽灵、红兔毛。紫水晶一般以稍有云状物、颜色深紫、晶体通透的为上品。
Most good materials found in character exist in polycrystalline sort rather then as a single crystal. They are literally composed of countless grains (modest crystals) packed with each other to fill all Place. Just about every particular person grain has a distinct orientation than its neighbours. While lengthy-array buy exists within just one particular grain, at the boundary concerning grains, the ordering adjustments route. A normal bit of iron or copper (Cu) is polycrystalline.
Crystalline framework is characterized by a geometrical, repeating sample of symmetric molecular structure. The arrangement of atoms kinds these ordered, repeating styles.
Learn the way the shape of the crystals establish the several minerals into familiesMinerals crystallize according to amongst seven motifs, called crystal methods.
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：
26Some of the finest drinking Eyeglasses are produced from guide crystal.一些最精致的酒杯是用铅晶质玻璃制成的。《柯林斯英汉双解大词典》
第三种是“皮景”，因某些其他的矿物与水晶体共生，或由于其他的物质侵蚀而依附于水晶表面，或者是水晶受自然环境的影响，在水晶表面出现蚀象，形成了一些景象或图案，这种景观存在于水晶表面。
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。
Within the Cambridge English Corpus We say the chain topology within the large w region acts as the proverbial ' scratch-on-theglass ' needed within the natural chemistry laboratory to create crystals. From your Cambridge English Corpus Frequent-force and temperature molecular-dynamics simulations of crystals on the lecithin fragments - glycerylphosphorylcholine and dilauroylglycerol. From the Cambridge English Corpus Along with these, dust particles are observed in small-temperature plasmas, like those Employed in plasma processing and plasma crystals. Within the Cambridge English Corpus The ultimate part of the book focuses on peculiarities of strongly coupled dusty plasmas, like the formation of dust crystals and related beautiful forces. Within more info the Cambridge English Corpus Comprehensive characterization of injury threshold in titanium doped sapphire crystals with nanosecond, picosecond, and femtosecond laser pulses. In the Cambridge English Corpus Unbroken crystals are euhedral; rounded, or even more irregular, Principal morphologies weren't observed. Through the Cambridge English Corpus See all samples of crystal These illustrations are from corpora and from sources online. Any views inside the illustrations usually do not depict the feeling of the Cambridge Dictionary editors or of Cambridge University Push or its licensors.
隐晶类水晶外观是一块块的，不是成六角水晶簇状，但他们却也是属六方晶系的。但我们不能以肉眼观察到他们的六角形结晶，因为结晶的体积极为细小，需以显微镜协助下才能看到六角开结晶。而此类水晶非常平滑，因为结晶之间有“水化硅石”填补，玛瑙便属于此类。
压电性：水晶晶体受到压力时会产生电荷；反之，受到电压作用时，晶体会产生频率很高的振动。水晶具有可使压力与电荷相互转移的性能，称压电性。
水晶的价值根据品质、块体的大小、美感和产量多少的不同相差较大。遇到好的天然水晶要敢于下手，但好的水晶一般大家都想得到，值与不值，就要看经验了。由于天然水晶的开采和制作原因，没有瑕疵的水晶很难得到，纯净的饰品要达到与合成水晶媲美的品质，实在是很难得。另外，由于水晶的特性，在佩戴过程中，也会改变其等级，比如因为某种原因，有可能会逐渐产生较大裂纹。