5 Easy Facts About Crystal Described
5 Easy Facts About Crystal Described
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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。
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。
A crystal composition concentrates on how the atoms are organized Within the crystal. Having said that, crystallographers have an interest in the overall condition and measurement of your crystal and its exterior features. To accomplish this, they have to learn about the crystal procedure.
看原料：选料精良的水晶制品，应看不到胶口及棉絮；质地纯净、光润、晶莹为好。
断口：贝壳状。断口也叫破口。它是指矿物被打击后产生不规则的破裂，破裂裂面凹凸不平称为断口。根据断口的形状可分为贝壳状和锯齿状。
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水晶内部有多种矿物包裹体，形成的各种景观可以肉眼观测，这样的水晶就是包裹体水晶观赏石。由于水晶本身就是宝石，因此人们称誉包裹体水晶为“宝石级的观赏石”。包裹体水晶观赏石都具有独特性，具有极高欣赏和收藏价值。
Hexagonal �?Characterised by four axes, a few of which are equivalent in length and intersect at one hundred twenty levels, which has a fourth axis perpendicular to the other 3.
13Nearly all computer systems contain a quartz-crystal clock to regulate their Procedure.几乎所有的计算机都有一个石英晶体时钟来调节它们的运行。
say cheese something which somebody who is taking a photograph of you informs you to convey so that your mouth can make The form of the smile
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。
正常的水晶在生长时，多可以发现和柱形尖端棱线平行的生长纹（advancement lines）。由于在地底、岩洞中的生长空间多狭窄，尤其在遇到地震时，或地壳变动时，甚至容易遭到其他矿石的挤压，常常会压迫产生不同的「晶面」。还有，当水晶还是在液态状的时候，常常也会包覆着其他的矿石、泥灰一起结晶成长，如金红石（稍后变成发晶）、火山泥灰（稍后变成幻影水晶）等等。所有的这些，都是「自然的一部分」，请不要视为「瑕疵」。
⑦双色水晶：一种紫色和黄色共存一体的水晶，紫色、黄色之间界限较明显，分别占据晶块的一部分。
Binary crystals are present in a lot of constructions. Some pairs of elements type more than one construction. At area temperature, cadmium sulfide may well crystallize both from the zinc blende or wurtzite framework. Alumina also has two achievable constructions at home temperature, α-alumina (corundum) and β-alumina. Other binary crystals exhibit distinctive structures at different temperatures. Amongst the most elaborate crystals are those of silicon dioxide (SiO2), that click here has 7 diverse constructions at numerous temperatures and pressures; the commonest of those buildings is quartz.