Calcite crystals are frequently Utilized in optical machines, and in many cases the graphite in pencil guide are sheets of crystals that essentially split aside layer by layer to write. Silica can kind silicate crystals which are the basis for quartz, mica, olivine, and a number of other crystals and minerals.

the sound state of numerous straightforward substances, which have a regular shape and surfaces organized in equivalent designs

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。

③次生包裹体：指主体水晶形成后，由于环境的变化使得主晶周围的一些物质沿裂隙进入到其内部而形成的包裹体。形成的原因有出熔作用、裂隙的结晶化、以及放射性元素破坏的作用等。水晶典型的次生包裹体有胶花水晶中的氧化铁充填物等。

条痕颜色：无色。矿物粉末的颜色叫条痕。它可以消除假色，减弱他色，保留自色，是比矿物的颜色更为可靠的鉴定特征之一。

⑧、雕刻：立体感强，工艺高，做工精细，成本高。分手工雕刻图形、机器雕刻文字。

Crystals glance distinctive from a number of other rocks and minerals, but �?barring a few Unique cases �?nearly all minerals hide a crystalline composition underneath the floor.

Like a incredibly hot solution cools or maybe a saturated Option evaporates, Crystal particles attract shut plenty of for chemical bonds to sort. Crystals also can sort from deposition directly from the fuel period. Liquid crystals possess particles oriented within an arranged method, like strong crystals, but have the ability to flow.

水晶常以晶簇、晶洞形式产出，其中水晶洞一般存在于由火山喷发而形成的巨厚熔岩流层的火成岩与玄武岩中。火山喷发时所含的气体或热水溶蚀等作用导致岩层中出现大量的孔隙，当富含硅质矿物的流体进入较薄的熔岩孔隙中，且温、压条件合适时将结晶沉淀出水晶等矿物。

Solids that have brief-assortment purchase but deficiency extensive-selection buy are identified as amorphous. Almost any product can be manufactured amorphous by rapid solidification from the melt (molten state). This problem is unstable, as well as the reliable will crystallize in time. In the event the timescale for crystallization is several years, then the amorphous condition seems stable.

Browse cryptosporidiosis cryptosporidium cryptozoologist cryptozoology crystal crystal ball crystal obvious idiom crystal lattice BETA copyright #randomImageQuizHook.filename #randomImageQuizHook.isQuiz Examination your vocabulary with our fun impression quizzes

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。

《古今小说·李公子救蛇获称心》：“器皿皆是玻璃、水晶、琥珀、玛瑙为之，曲尽巧妙，非人间所有。”

⑥白色的包裹体有蚀变的绿泥石、云母、愈合裂隙、水晶、方解石、透闪石等。