诗中“胜美玉”，“过冰清”，写出水晶的质地美，而“亦欲应时明”则描绘出水晶充满灵性的动态美，耐人寻味。罗维是有独特眼光，懂得水晶真谛，第一个称赞水晶超过美玉的伟大诗人。他的认识已被千年之后的科学理论所证实；以水晶为直接吟咏对象的诗篇还有：

⒉棉、云雾或渣状包裹体、杂质在透明水晶内部有雾蒙蒙的现象或是感觉里面像有棉絮状、渣状物质一样的包裹体，这些包裹体的存在，影响水晶的整体美观。还有的水晶内局部含有黑斑或其他颜色的斑状物质，与水晶整体不协调，被视为水晶的杂质，有这种杂质的水晶是次品。

These improvements involve exotic structures with programmable lattice symmetries and nicely-described crystal behavior, responsive materials that leverage the intrinsic properties of nucleic acids to govern structures on need, nanoparticle superlattices grown epitaxially from surfaces and colloidal crystals which offer insights into gentle–subject interactions. Seeking ahead, we challenge the Local community to leverage the remarkable structural Management afforded by crystal engineering with DNA to synthesize lessons of purposeful elements that press outside of what has actually been achievable with Normally transpiring crystalline supplies or All those produced by much more regular tactics.

Fig. 7: A template-directed strategy can Management the placement of making blocks with a surface from the development of sophisticated structures.

You will discover many alternative crystals according to geometric buildings, crystal expansion, and product. There can be preparations of hexagonal carbon atoms or amethyst that makes hexagonal pyramid constructions.

⑧、雕刻：立体感强，工艺高，做工精细，成本高。分手工雕刻图形、机器雕刻文字。

水晶的评价标准和高端宝石有所不同。多数高端宝石把颜色放在评价的第一位，而对水晶来说，颜色和净度（水晶行业称作晶体）是近乎同等重要的因素：

如果水晶内部杂质中有传说中人物的造型，如佛、星座、生肖等价值可能要高于同等颜色和净度的水晶。

Q.4. What is the distinction between atomic construction and crystal construction? Ans. The first difference between atomic construction and crystal structure lies in their definitions: atomic composition refers to how atoms are arranged in a single molecule or perhaps a cluster of molecules, Whilst crystal construction considerations the particular arrangement of atoms inside a strong compound.

The definition of a strong seems clear; a solid is normally regarded as being hard and company. Upon inspection, however, the definition results in being a lot less clear-cut. A cube of butter, for instance, is hard immediately after currently being saved in a fridge and is also clearly a stable. Right after remaining to the kitchen counter for each day, exactly the same cube gets to be really soft, and it's unclear In case the butter need to continue to be regarded as a strong.

看孔眼：对于缀穿水晶制品（如项链、手链、佛珠），要看孔眼是否平直，孔的粗细是否均匀，有无细小裂纹。孔壁必须清澈透明，无“白痕”。

The sodium chloride crystal lattice is characterised with the near packing of the good sodium ions and negative chloride ions. Every single sodium ion is surrounded by six chloride ions, and each chloride ion is surrounded by 6 sodium ions, developing a highly stable and symmetrical framework.

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The C60 molecules, also called buckyballs, are rather sturdy and Virtually incompressible. Crystals are formed this kind of that the balls are arranged within an fcc lattice which has a one particular-nanometre spacing in between the centres of adjacent balls. The related C70 molecule has The form of the rugby ball; C70 molecules also form an fcc crystal when stacked collectively. The reliable fullerenes kind molecular crystals, with weak binding—supplied by van der Waals interactions—among the molecules.