A Simple Key For Crystal Unveiled
A Simple Key For Crystal Unveiled
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李商隐,杜牧,白居易,欧阳修,苏轼,呈大昌,辛弃疾,杨万里,吴文英,杨基,魏源等诗坛,词林大家都有歌吟水晶的佳篇传世。
按照透明度指标,水晶越透明,价格越高,好的透明的水晶加工出的成品晶莹剔透、光辉耀眼。透明度高的水晶能提升颜色的艳丽,否则显得呆板无灵性。光学水晶要求全透明、无双晶、无杂质。工艺水晶要求透明、少裂、少瑕疵。熔炼水晶要求透明,可有较多裂纹。三者价值依次降低,熔炼水晶只能作为熔炼水晶玻璃的原料。在工艺水晶中,晶体较大的,可用来做水晶眼镜和雕刻高档工艺品,因而价格较高。
Chemical Bonds The categories of chemical bonds formed in between atoms or teams of atoms in crystals count on their measurement and electronegativity. There are four groups of crystals as grouped by their bonding:
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《全唐诗》卷七八五载《白雪歌》:“鸟啄冰潭玉镜开,风敲檐溜水晶折。”
你们都知道,拿起一个水晶棱镜,让一束阳光通过它,就会得到一个光谱,看起来就像一条连续的彩虹色带。
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。
Crystals are nothing a lot more than an requested arrangement of molecules or atoms. Crystals come in many alternative sizes and shapes, and each one has distinctive features. The things they are made of establishes how it'll sort.
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:
多色�?无色水晶没有多色性。有色水晶有弱到强的多色�?表现为体色的不同深浅。
. The next layer is shaded while in the figure. It's the exact same airplane-triangular construction; the atoms read more sit while in the holes shaped by the primary layer. The initial layer has two equal sets of holes, but the atoms of the second layer can occupy just one set. The 3rd layer, labeled C
You will discover other minerals and molecules that may type these crystal lattices. Snowflakes are a common example of a roughly symmetric and geometrically patterned framework from ice crystals, and gemstones of all kinds are typically crystals.
水玉:中国最古老的称法叫水玉,意谓似水之玉,又说是 �?千年之冰所�?�?。唐代诗人温庭筠《题李处士幽居》写道:�?水玉簪头白角巾,瑶琴寂历拂轻�?”。水玉一词最早频繁出于《山海经》:�?又东三百里,日堂庭之�?…�?多水�?”;�?丹山出焉,东南流注于洛水,其中多水玉 ”;�?逐水出焉,北流注于渭,其中多水玉 ”。司马相如《上林赋》曰�?�?水玉磊河 �?。水晶得名水玉,古人是看�?�?其莹如水,其坚如�?�?的质地。
21You all know how when you have a crystal prism and go a beam of sunlight by it, you will get a spectrum, which seems like a steady band of rainbow colors.