Crystal Options
Crystal Options
Blog Article
17These rings are indicative from the crystal construction of nickel and can be defined only by invoking wavelike Houses of light.这些光圈表明了了镍的晶体结构，而且只能通过光线中波的特征来解释。
⒉棉、云雾或渣状包裹体、杂质在透明水晶内部有雾蒙蒙的现象或是感觉里面像有棉絮状、渣状物质一样的包裹体，这些包裹体的存在，影响水晶的整体美观。还有的水晶内局部含有黑斑或其他颜色的斑状物质，与水晶整体不协调，被视为水晶的杂质，有这种杂质的水晶是次品。
晶及其石英岩类玉石是中低档宝玉石，虽比不上钻石、红蓝宝石的高贵，但在加工中如果构思巧妙而且加工精细，同样具有很高的价值。如中国传统的玛瑙“虾盘”、“龙盘”、“水漫金山�?水胆玛瑙摆件)都被誉为国家级宝玉石。
养殖晶：养殖晶是指，用天然水晶做种子，然后赋予天然水晶生长的高压条件，养殖器中有富含二氧化硅的分子。然后二氧化硅分子围绕天然水晶种生长，这样的水晶成分（分子式）与天然水晶是一摸一样的，唯一有差别的是，这样的水晶磁场作用没有天然水晶强。
C2 [ U ] clear glass of extremely good quality, ordinarily with its area Minimize into delicate styles:
Not all crystals form in drinking water, but nearly all crystals form the exact same way, atoms come with each other and turn into a uniformed cluster. The process will take as little as a few days to perhaps a thousand several years. Pure crystals that come from the Earth type the identical way.
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：
11I meticulously opened the bundle and located a crystal bell inside.我小心地打开包裹，发现里面有一个水晶钟。
包裹体常见有固相、固液气三相组合、空洞以及双晶、色带等。水晶中典型的同生包裹体有自形的锐钛矿、气液两相包体等。
看文化：水晶里面的包裹体象形，能与文化、宗教及历史有所牵连的话，价格往往会比水晶本身的价值高出几倍甚至几百倍。
用手去触摸水晶，天然水晶通常温度要比人造水晶的要凉的多；用眼观察，天然水晶通常有棉絮状的包裹体，这个是人造水晶所没有的。
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。
14For instance, Now we have Quartz crystal clocks and watches precise to within just one particular moment a yr.例如，我们使用的每年误差不超过one分钟的石英水晶钟表和手表。
crystal Alteration is variable: absent in several crystals, in Many others creating dense sericite aggregates which may clearly show some recrystallization effects to generate coarser-grained white mica. With the Cambridge English Corpus The tridymite crystals are rectangular or wedge-shaped and are occasionally organized in aggregates. From the Cambridge English Corpus On top of that, haloarchaeal cells were being embedded in just salt crystals beneath laboratory situations and subsequently analysed by gentle microscopy. From your Cambridge English Corpus The white clouds (normally sparse) ended up also greatly considered to be remaining composed of small crystals of water ice, alternatively like cirrus in our environment. From the Cambridge English Corpus They're present in evaporite salt lakes and will be trapped in salt crystals for the duration of evaporation. From your Cambridge English Corpus Consequently, the cells (organelles and membranes) are ruined mechanically by ice crystals, leading to death by means of mobile lysis. click here Within the Cambridge English Corpus The crystals ended up Utilized in the main or next orders of reflection. From the Cambridge English Corpus Within our 8xperiments, the crystals were cubes by using a base spot of eight e mm. From the Cambridge English Corpus Vibration-assisted intermolecular hydrogen tunneling in photoreactive doped molecular crystals : impact of temperature and force.