Crystal Secrets

Crystal Secrets

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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。

无色水晶以晶莹美丽、洁净透明着称。衡量无色水晶主要看它的纯度，越纯、越透明越好。干净的、无瑕疵的、杂质少的价值就高。无色的水晶如果很脏，就没有利用价值。

These improvements incorporate unique constructions with programmable lattice symmetries and very well-outlined crystal routines, responsive elements that leverage the intrinsic Homes of nucleic acids to govern structures on demand from customers, nanoparticle superlattices grown epitaxially from surfaces and colloidal crystals that offer insights into light–issue interactions. Searching forward, we problem the Group to leverage the remarkable structural Regulate afforded by crystal engineering with DNA to synthesize lessons of purposeful products that push further than what continues to be feasible with In a natural way transpiring crystalline resources or Those people made by extra regular methods.

Fig. three: A library of lattice symmetries may be accessed by transforming the particle Main and DNA shell.

. These 4 buildings comprise many of the binary crystals with equivalent numbers of cations and anions.

Lattices can have a person lattice level per mobile or more than one, yielding a complete of 14 Bravais crystal lattice sorts. Bravais lattices, named for physicist read more and crystallographer Auguste Bravais, describe the three-dimensional array produced by a list of discrete details.

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。

市场上有很多人把熔炼水晶也叫做合成水晶，那是不准确的，一般都是以水晶废料为原料在高温高压下熔炼出来的，而不是结晶成的，不具备水晶的晶体特性，所以不能把熔炼水晶与合成水晶混为一谈；但是熔炼水晶耐高温，用优质二氧化硅熔炼成的熔炼水晶可以做成实用产品比如水晶杯、烤盘、茶具等，实际上一代伟人毛泽东主席的水晶棺就是选用东海优质水晶熔炼而成的。

Among the many binary crystals, the easiest constructions to visualise are those with equal figures of The 2 varieties of atoms. The construction of sodium chloride is predicated on the dice. To construct the lattice, the sodium and chlorine atoms are put on alternate corners of a cube, along with the framework is recurring (Figure 3B).

Crystals with apparent flat faces are termed euhedral crystals, whilst These missing described faces are termed anhedral crystals. Crystals consisting of purchased arrays of atoms that aren't always periodic are referred to as quasicrystals.

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Molecular Crystals: Entire molecules are bonded to one another within an organized way. A fantastic instance is a sugar crystal, which has sucrose molecules.

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水晶的价值根据品质、块体的大小、美感和产量多少的不同相差较大。遇到好的天然水晶要敢于下手，但好的水晶一般大家都想得到，值与不值，就要看经验了。由于天然水晶的开采和制作原因，没有瑕疵的水晶很难得到，纯净的饰品要达到与合成水晶媲美的品质，实在是很难得。另外，由于水晶的特性，在佩戴过程中，也会改变其等级，比如因为某种原因，有可能会逐渐产生较大裂纹。