Calcite crystals are sometimes Utilized in optical equipment, and in some cases the graphite in pencil direct are sheets of crystals that effectively crack aside layer by layer to write. Silica can form silicate crystals which might be The idea for quartz, mica, olivine, and all kinds of other crystals and minerals.
Yet another entertaining, and tasty, experiment should be to form massive crystals utilizing sugar. By heating sugar with water after which allowing this solution evaporate on sticks, you could type rock candy from sugar crystals!
水晶文化历史悠久，古人曾赋予它一串极富美感的雅称：水玉、水精、水碧、石英等。
If you wish to see how crystals are formed, you may do some project within your incredibly have kitchen area and find out the development of the crystals come about along with your possess eyes . This can be carried out by putting a small level of table salt into some typical tap drinking water, wait 24 hrs, and you'll see wonderful cubed formations. This transpires since the drinking water is evaporating, which triggers the atoms that make up the salt (the mineral) and the h2o to return nearer alongside one another.
《全唐诗》卷七八五载《白雪歌》：“鸟啄冰潭玉镜开，风敲檐溜水晶折。”
发晶，包括钛晶，铜顺发，绿发晶，黑发晶，银发晶，杂色发晶，其中钛晶最珍贵，少数钛晶价值可比钻石，红宝石和蓝宝石以及祖母绿。
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：
②固体包裹体：指呈固态相存在包裹体，多因岩浆、热液、变质作用等形成的早期结晶物被水晶捕获而形成。
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：
英语-中文（简体） word #beta Beta /beta #preferredDictionaries ^chosen name /chosen /preferredDictionaries
Through the Cambridge English Corpus We are saying the chain topology during the large w region functions given that the proverbial ' scratch-on-theglass ' needed in the natural and organic chemistry laboratory to make crystals. In the Cambridge English Corpus Constant-strain and temperature molecular-dynamics here simulations of crystals of your lecithin fragments - glycerylphosphorylcholine and dilauroylglycerol. With the Cambridge English Corpus In addition to these, dust particles are already noticed in low-temperature plasmas, like People Utilized in plasma processing and plasma crystals. Within the Cambridge English Corpus The final Portion of the e-book concentrates on peculiarities of strongly coupled dusty plasmas, such as the development of dust crystals and connected appealing forces. Within the Cambridge English Corpus Comprehensive characterization of damage threshold in titanium doped sapphire crystals with nanosecond, picosecond, and femtosecond laser pulses. Through the Cambridge English Corpus Unbroken crystals are euhedral; rounded, or more irregular, Principal morphologies weren't noticed. With the Cambridge English Corpus See all examples of crystal These examples are from corpora and from sources on the internet. Any views during the illustrations tend not to characterize the feeling of your Cambridge Dictionary editors or of Cambridge College 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。
⑤、打孔：是在水晶成品未完成前，根据其所需打孔之尺寸及位置，以钻头加工，如制表件、笔筒、瓶孔等。
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。