Everything about Crystal

Not all crystals are equally crystalline. There will often be impurities, as well as ionic & covalent concerning molecules can develop vastly unique constructions outside of precisely the same content. An excellent example of this are diamonds and graphene.

杂质、裂纹越少越好。质地好的水晶制品，应看不到星点状、云雾状和絮状分布的气液包裹体或组成玉石的颗粒。有裂纹、斑点，则属于次品。

景观水晶，就是包裹体组成各种造型特异的水晶，有的似山水，有的似人物，有些像文字，有些像动物，植物，器物等等。

水碧：《山海经》中，水晶又被称作水碧： �?又南三百里，日耿山，无草木，多水碧 �?，郭璞注�?�?亦水玉类 ”。这种称谓常被文人所引用，晋代郭景纯《璞江赋》道�?�?鬼，水碧�?�?。水晶又有人称它叫玉瑛。《符瑞图》载�?美石似玉，水精谓之玉瑛也�?”

断口：贝壳状。断口也叫破口。它是指矿物被打击后产生不规则的破裂，破裂裂面凹凸不平称为断口。根据断口的形状可分为贝壳状和锯齿状。

They may at some point produce a great small uniform cluster of atoms, This is often the process of increasing crystals. The greater they're able to appear together, the more of a formation might be obvious to the naked eye. Scientists can ascertain what mineral they are taking a look at by how the crystals type.

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。

Ionic Crystals: Electrostatic forces type ionic bonds. A traditional example is a halite or salt crystal.

Metallic Crystals: Metals normally type metallic crystals, where by many of the valence electrons are free to maneuver all over the lattice. Iron, for example, can type various metallic crystals.

A crystal process refers back to the classification of crystals determined by the geometric arrangement and symmetry in their lattice buildings. There are actually 7 main crystal techniques:

15The trick to a very good thermoelectric materials is usually a crystal construction in which electrons can stream freely.制造一种好的热电材料的关键是，需要一种电子可以自由流动的晶体结构。

Crystal Lattices You can find seven systems of crystal buildings, that are also known as lattices or Area lattices:

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。

Binary crystals are located in many structures. Some pairs of aspects sort multiple construction. At space temperature, cadmium sulfide might crystallize possibly in the zinc blende or wurtzite framework. Alumina also has two achievable constructions at place temperature, α-alumina (corundum) and β-alumina. Other binary crystals show various constructions at distinctive temperatures. Among the most complicated crystals are those of silicon dioxide (SiO2), that has seven diverse structures at different temperatures read more and pressures; the most common of such buildings is quartz.