5 Essential Elements For Crystal

5 Essential Elements For Crystal

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其它描述：《庶物异名疏》中说： �?水精出大秦国，一名黎�?�?。结晶完整的水晶晶体，就如参差交错的马齿，所以人们又叫它马牙石。先民们最早用它研磨成眼镜片，因而送它一个眼镜石的绰号。水晶有通称，也有俗称。广州一带称水晶叫晶玉，又名鱼脑冻；江苏东海县山民发现水晶会 �?窜火�?�?，于是给它起个放光石的俗名。世间一物多名，不足为奇，而像水晶拥有这么多的别称，实不多见。瞧，从水玉、水碧、白玉、玉瑛、水精石英、黎难、晶玉到菩萨石、马牙石、眼镜石、放光石、千年冰、高山冻、鱼脑冻等等，简直构成一部奇石鉴赏史。

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。

对水晶进行评价主要依据其颜色、透明度、大小、净度、特殊图案及是否有光学效应等方面。以颜色纯正，浓度较高，内部无瑕为好。种类上紫晶最贵，其次为黄晶、烟晶、无色水晶和芙蓉石。有特殊光学效应的水晶的价格更高。

Fig. seven: A template-directed technique can Regulate The position of creating blocks on the surface area from the formation of intricate structures.

这种水晶观赏石特指水晶晶簇，它是众多单晶体集中生长在一起的晶体组合。晶簇以其晶莹剔透、独特造型而享誉水晶赏石界。

Good Vocabulary: linked words and phrases and phrases Glass blower blowpipe bulletproof glass Minimize glass fibreglass frosted glassware glaze glazed glazier glazing prism prismatic punty Pyrex reglaze unglazed vitreous vitrification vitrify See much more final results » It's also possible to find relevant words, phrases, and synonyms while in the subjects:

根据包裹体和主晶宝石之间形成的先后关系可将水晶的包裹体划分以下三种类�?

Hexagonal �?Characterised by 4 axes, three of that are equivalent in length and intersect at a hundred and twenty levels, by using a fourth axis perpendicular to the other 3.

Metallic Crystals: Metals generally variety metallic crystals, wherever several of the valence electrons are cost-free to maneuver through the entire lattice. Iron, for instance, can variety distinctive metallic crystals.

幽灵水晶，分绿幽灵，红幽灵，白幽灵等，主要组成为绿泥石，其中绿幽灵属于珍贵品种。

用手去触摸水晶，天然水晶通常温度要比人造水晶的要凉的多；用眼观察，天然水晶通常有棉絮状的包裹体，这个是人造水晶所没有的。

Fig. one: Schematic of crystal development from creating blocks made up of a particle Main in addition to a shell of DNA ligands hooked up to the particle surface.

crystal, any solid content during which Crystal the element atoms are arranged in a very definite sample and whose surface regularity reflects its internal symmetry.

The C60 molecules, also known as buckyballs, are really sturdy and Just about incompressible. Crystals are shaped this kind of that the balls are arranged in an fcc lattice having a one-nanometre spacing involving the centres of adjacent balls. The similar C70 molecule has the shape of the rugby ball; C70 molecules also kind an fcc crystal when stacked collectively. The stable fullerenes type molecular crystals, with weak binding—provided by van der Waals interactions—among the molecules.