Top Guidelines Of Crystal
Top Guidelines Of Crystal
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对这类水晶晶簇观赏石的欣赏与评价，主要是强调晶体的完整、品种的名贵（如紫水晶、烟晶、发晶等）、造型奇特、含有名贵晶体（如辰砂、辉锑矿等）伴生等。晶簇产于矿床晶洞中，长相完美的并不多见，要完整无损地采集下来，又比较困难，故而采集起来代价较大，精品晶簇价值也就昂贵了。
③、粗抛光：是将模具压出之毛胚，以金刚石盘直接磨出成品之刻线。④、细抛光：在粗抛光之后，以抛光粉来磨成品至晶莹剔透为止。
发晶的价值取决于发的颜色、罕见性及大小，一般是发色鲜艳、块度大的价格高。水胆水晶的价值主要取决于水胆及晶体的大小、透明度的高低。如果水胆较大并有一定形态，便可加工成较为珍贵的工艺品。另外水胆中的水也有一定的科学研究价值，通过它们可了解几百万年前地球上水的成分及变化。
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。
You'll find many alternative crystals based upon geometric structures, crystal growth, and substance. There is usually preparations of hexagonal carbon atoms or amethyst that makes hexagonal pyramid structures.
Clever Vocabulary: linked terms and phrases Glass blower blowpipe bulletproof glass Slice glass fibreglass frosted glassware glaze glazed glazier glazing prism prismatic punty Pyrex reglaze unglazed vitreous vitrification vitrify See a lot more final results » You may also locate associated phrases, phrases, and synonyms during the topics:
Insert to term record Incorporate to phrase record [ C/U ] transparent rock that looks like ice, or maybe a bit of it
The weather are found in many different crystal packing arrangements. The most common lattice constructions for metals are All those attained by stacking the atomic spheres into the most compact arrangement.
水晶是有成色等级之分，影响水晶价位的因素很多，不像钻石以4C就可以判定，所以大家要多听多看多比较才能真正辨别出来。一般的标准是水晶石越大越好，越透越好，颜色越娇嫩越好，形状越典型越好。不过最重要还是自己喜欢，而选购时辨识真伪的方法大致有下列几种：
广义的包裹体是指宝石内部含有的与主晶宝石化学成分、物理性质等不同的物质。
15The trick to a superb thermoelectric product is often a crystal composition by which electrons can move freely.制造一种好的热电材料的关键是，需要一种电子可以自由流动的晶体结构。
Fig. 1: Schematic of crystal development from creating blocks composed of a particle Main as well as a shell of DNA ligands attached to the particle surface.
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This crystal framework is to blame for the exclusive physical and chemical Homes of sodium chloride, together with its substantial melting position, electrical conductivity, and talent to kind ionic bonds very easily.