Calcite crystals are often Employed in optical gear, and even the graphite in pencil direct are sheets of crystals that primarily break apart layer by layer to put in writing. Silica can form silicate crystals which are The idea for quartz, mica, olivine, and a number of other crystals and minerals.
the sound point out of many uncomplicated substances, which have an everyday shape and surfaces arranged in similar designs
4Without a crystal ball, It is really unattainable to mention wherever we'll be up coming yr.不用水晶球预卜未来，我们说不准明年处境如何呀。《牛津词典》
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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。
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对任何宝石来说，颜色都是非常重要的，水晶也不例外。如果是水晶晶体是有颜色的，如粉水晶、黄水晶、紫水晶等，其颜色评价的最高标准则是明艳动人，不带有灰色、黑色、褐色等其他色调。如粉水晶，颜色以粉红为佳；紫水晶，要求颜色为鲜紫，纯净不发黑；黄水晶，要求颜色不含绿色、柠檬色调，以金橘色为佳。对于发晶来说，晶体的颜色也是很重要的。相同发丝的金发晶，晶体完全无色（白水晶）和晶体略偏茶色，肉眼的视觉观感也是有差别的，所以前者的价格会高于后者。
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。
水晶包裹体丰富多彩，从气体、液体到各种矿物质，甚至宝石，均可被包含于水晶内，各种包裹体所形成的景象更是变化万千。按照包裹体的内容，常把包裹体水晶分为一下八类：
The definition of the reliable appears obvious; a solid is generally considered being really hard and organization. On inspection, nonetheless, the definition results in being fewer clear-cut. A cube of butter, for example, is tough right after currently being saved within a fridge and is Plainly a good. After remaining around the kitchen counter for per day, the identical cube gets fairly gentle, and it's unclear Should the butter must even now be considered a good.
⑥、丝印：水晶表面附有不同的色料进行效果处理，颜色层面较厚，着力后方可脱落。
You will find other minerals and molecules which will kind these crystal lattices. Snowflakes can be a common illustration of a approximately symmetric and geometrically patterned construction from ice crystals, and gemstones of all types are typically crystals.
⑨、喷砂：立体感弱，较平整，无凹凸感，机器雕刻文字、图形等后进行效果处理。成本低制作快。
The C60 molecules, also known website as buckyballs, are fairly potent and Practically incompressible. Crystals are fashioned these that the balls are arranged within an fcc lattice with a a single-nanometre spacing involving the centres of adjacent balls. The identical C70 molecule has The form of a rugby ball; C70 molecules also sort an fcc crystal when stacked together. The sound fullerenes type molecular crystals, with weak binding—provided by van der Waals interactions—amongst the molecules.