How Much You Need To Expect You'll Pay For A Good Crystal

This idea applies equally in a single, two, and three-dimensional spaces. The whole crystal lattice is often built by consistently reproducing the sample of the device mobile in all directions.

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A standard concept in crystal structures will be the unit cell. It is the smallest device of volume that allows identical cells to become stacked alongside one another to fill all Area. By repeating the pattern with the unit mobile repeatedly in all Instructions, the entire crystal lattice might be produced. A cube is The only illustration of a device cell. Two other examples are shown in Determine one. The first is definitely the unit mobile for your experience-centred cubic lattice, and the second is for just a human body-centred cubic lattice. These structures are explained in the next paragraphs.

看原料：选料精良的水晶制品，应看不到胶口及棉絮；质地纯净、光润、晶莹为好。

C2 [ U ] transparent glass of Crystal very high-quality, commonly with its floor Reduce into sensitive styles:

结晶�?When sea h2o is allowed to evaporate, salt crystals are deposited. 海水蒸发后，盐的结晶体就沉淀下来。

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。

To be a hot Resolution cools or maybe a saturated Option evaporates, particles draw near more than enough for chemical bonds to variety. Crystals may also sort from deposition straight from the gas period. Liquid crystals possess particles oriented in an organized manner, like strong crystals, yet have the ability to circulation.

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。

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水晶的价值还与块体大小有关，同样的颜色和净度级别，块越大越难得。有时候质量级别虽然低一些，但块体够大，也可能价格高于高级别的小晶体

在透明的水晶中，隐裂纹呈亮晶晶的片状，有时还会有晕彩效应。这些裂纹是水晶在生长过程中，遇到外力挤压而在内部产生的一些隐形裂纹，隐裂纹在芙蓉石、紫水晶、白水晶球及白水晶柱中都很常见。有的裂纹后来被物质填充，形成愈合的裂纹，也就是原来的裂纹又长住了。这种裂纹对水晶的影响相对要小一些。

Tetragonal �?Characterised by 3 mutually perpendicular axes, two of which happen to be equal in length, even though the 3rd is longer or shorter and perpendicular to one other two.