天然的水晶一般都会有絮状（绵绺），也就是大家俗称的瑕疵，这是液体水落石出和二氧化碳的小孔穴，而人工合成的水晶就不会有这样的特征。

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。

A crystal construction focuses on how the atoms are arranged inside the crystal. Nevertheless, crystallographers are interested in the overall shape and size on the crystal as well as its exterior features. To perform this, they should understand about the crystal procedure.

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Fig. four: Creating blocks with distinctive shapes and floor chemistries direct the formation of unique crystal symmetries.

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

⑦、镀彩：运用类似电镀的手法在水晶表面以不同的色彩，层面较薄，经摩擦可划伤�?；出现划痕，由于镀彩经常位于底部，因此在镀彩底部经常采用其它对象附着，如生肖文镇。

Crystals are practically nothing greater than an purchased arrangement of molecules or atoms. Crystals can be found in many alternative sizes and shapes, and each one has diverse qualities. Whatever they are made of establishes how it's going to type.

Q.four. Exactly what is the distinction between atomic construction and crystal framework? Ans. The main difference between atomic construction and crystal framework lies inside their definitions: atomic structure refers to how atoms are structured within a one molecule or even a cluster of molecules, While crystal framework concerns the particular arrangement of atoms inside of a solid compound.

Crystals with evident flat faces are called euhedral crystals, more info when All those missing defined faces are termed anhedral crystals. Crystals consisting of purchased arrays of atoms that aren't normally periodic are called quasicrystals.

One crystals of metals are smooth and malleable, though polycrystalline metals are tougher and much better and tend to be more practical industrially. Most polycrystalline materials might be designed into significant solitary crystals after extended warmth treatment method. Prior to now blacksmiths would warmth a piece of metal to really make it malleable: heat makes some grains mature substantial by incorporating smaller sized types. The smiths would bend the softened steel into condition then pound it awhile; the pounding would allow it to be polycrystalline again, expanding its energy.

的释�?浏览 cryptologist cryptology cryptorchidism cryptosporidium crystal crystal ball crystal crystal clear idiom copyright crystalline #randomImageQuizHook.filename #randomImageQuizHook.isQuiz 用我们的趣味配图小测验考考你的词汇量

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。

水晶观赏石在形态、质地、内部特征等方面往往十分奇异。大自然有无限风光，都可以在包裹体水晶种找到缩影。