The Greatest Guide To Crystal

The Greatest Guide To Crystal

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27Local economists have seemed into their crystal balls and witnessed anything somewhat horrible.当地的经济学者们已预测到将会出现棘手的问题。《柯林斯英汉双解大词典》

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。

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。

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。

根据美国已经了解的情况，统计局的专家和其他人口统计学家在他们的视野中提供了一个不可抗拒的水晶球。

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

水晶原石观赏石，从字面意义理解：观赏水晶石的原貌，即经过抛光去皮后的包裹体水晶和原色水晶，不需雕刻不求象形就具有非常高的观赏价值和收藏价值。此类水晶观赏石对质地要求非常之高，水晶晶体通透干净，颜色艳丽，意境鲜明深刻的价值就高，它的价值特点就好比钻石，实实在在石头本身的价值。

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。

A lot of crystals behave like butter in that they're difficult at reduced temperatures but smooth at greater temperatures. They are really named solids in the slightest degree temperatures under their melting place. A possible definition of the sound is definitely an item that retains its condition if remaining undisturbed. The pertinent problem is how long the item keeps its shape. A remarkably viscous fluid retains its form for one hour although not a year. A strong ought to continue to keep its shape for a longer period than that.

A crystal get more info process refers back to the classification of crystals determined by the geometric arrangement and symmetry in their lattice constructions. You will find seven major crystal devices:

天然性是水晶观赏石的基本特性。通常整体造型水晶矿物不饰雕琢就具备很高的观赏价值，但是包裹体水晶观赏石经常需要适当打磨抛光，这样更方便观赏水晶内部的包裹体。

Molecular Crystals: Whole molecules are bonded to each other within an organized way. A superb instance is often a sugar crystal, which includes sucrose molecules.

玉石纹理如果能形成美丽的花纹、图案，其价格就高，如玛瑙内红白相间的色带有规律地排列，形成缠丝玛瑙时，碧玉中的不均匀颜色形成一种风景图案时，材料的价值将提高。当水晶内包裹体形成美丽的图案时，如幽灵水晶、风景水晶，或者针状包裹体呈束状排列时，其价值都高于普通的水晶。图案越美观、越有意境越好。

21You all know the way once you have a crystal prism and pass a beam of daylight through it, you have a spectrum, which looks like a continuous band of rainbow shades.