Top Guidelines Of Crystal
Top Guidelines Of 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。
③、粗抛光：是将模具压出之毛胚，以金刚石盘直接磨出成品之刻线。④、细抛光：在粗抛光之后，以抛光粉来磨成品至晶莹剔透为止。
看做工：水晶制品加工过程分为两种，即磨工和雕工。如水晶项链、手链、耳环等属于研磨品；观音像、内画鼻烟壶等属于雕刻品。
诗中道出一段唐代由盛变衰的史实。玄宗末年，杨贵妃得宠，三姐妹并封为国夫人。他们养尊处优，奢华至极，仆人用水晶盘将珍馐佳肴端到宴席上，美人觉得没有口味，懒得动筷子。作为“诗圣”作为“史诗”，紫驼一段写饮食之精美，不空发议论，只尽情揭露事实，无一刺讥语，无一慨叹声，却使人于以外得之：此诗之善讽也。以史为鉴，这样的世道，这样的人物，国家不出“安史之乱”那样的大祸反倒不正常了。
Crystalline structure is characterised by a geometrical, repeating pattern of symmetric molecular framework. The arrangement of atoms types these requested, repeating patterns.
Learn the way the shape of your crystals figure out different minerals into familiesMinerals crystallize Based on among seven motifs, often known as crystal programs.
水晶与高档宝石的净度要求有很大不同。高档宝石稀少罕见，所以一般人们普遍对高档宝石的净度不会过于苛求。而水晶的产量着实大得惊人，所以通常人们会要求水晶净度越高越好，尽量避免有较明显的内含物的水晶。
损伤是指水晶由于加工或不小心摔掉、碰撞等原因，人为造成的损坏。它可以是破口，也可以是凹坑等。
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多色�?无色水晶没有多色性。有色水晶有弱到强的多色�?表现为体色的不同深浅。
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。
There are actually other minerals and molecules that will variety these crystal lattices. Snowflakes undoubtedly are a typical illustration of a roughly symmetric and geometrically click here patterned framework from ice crystals, and gemstones of all varieties are usually crystals.
水玉：中国最古老的称法叫水玉，意谓似水之玉，又说是 �?千年之冰所�?�?。唐代诗人温庭筠《题李处士幽居》写道：�?水玉簪头白角巾，瑶琴寂历拂轻�?”。水玉一词最早频繁出于《山海经》：�?又东三百里，日堂庭之�?…�?多水�?”；�?丹山出焉，东南流注于洛水，其中多水玉 ”；�?逐水出焉，北流注于渭，其中多水玉 ”。司马相如《上林赋》曰�?�?水玉磊河 �?。水晶得名水玉，古人是看�?�?其莹如水，其坚如�?�?的质地。
The C60 molecules, also called buckyballs, are fairly potent and almost incompressible. Crystals are formed such which the balls are arranged in an fcc lattice using a a person-nanometre spacing among the centres of adjacent balls. The comparable C70 molecule has the shape of a rugby ball; C70 molecules also variety an fcc crystal when stacked with each other. The stable fullerenes kind molecular crystals, with weak binding—provided by van der Waals interactions—concerning the molecules.