Crystal for Dummies

Crystal for Dummies

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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。

⒉棉、云雾或渣状包裹体、杂质在透明水晶内部有雾蒙蒙的现象或是感觉里面像有棉絮状、渣状物质一样的包裹体，这些包裹体的存在，影响水晶的整体美观。还有的水晶内局部含有黑斑或其他颜色的斑状物质，与水晶整体不协调，被视为水晶的杂质，有这种杂质的水晶是次品。

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。

The ordered inner structure of huge crystals, such as the fluorite and quartz proven right here, is mirrored in their geometric designs.

条痕颜色：无色。矿物粉末的颜色叫条痕。它可以消除假色，减弱他色，保留自色，是比矿物的颜色更为可靠的鉴定特征之一。

发晶，包括钛晶，铜顺发，绿发晶，黑发晶，银发晶，杂色发晶，其中钛晶最珍贵，少数钛晶价值可比钻石，红宝石和蓝宝石以及祖母绿。

水晶原石观赏石，从字面意义理解：观赏水晶石的原貌，即经过抛光去皮后的包裹体水晶和原色水晶，不需雕刻不求象形就具有非常高的观赏价值和收藏价值。此类水晶观赏石对质地要求非常之高，水晶晶体通透干净，颜色艳丽，意境鲜明深刻的价值就高，它的价值特点就好比钻石，实实在在石头本身的价值。

Hexagonal �?Characterized by four axes, 3 of which might be equal in duration and intersect at a hundred and twenty levels, having a fourth axis perpendicular to the opposite 3.

Metallic Crystals: Metals normally kind metallic crystals, wherever many of the valence electrons are cost-free to maneuver all over the lattice. Iron, for instance, can type distinct metallic crystals.

crystal The recently crystallized quartz grains are characterized by elongate crystals oriented oblique to the shear band margins, defining a standard grain-form foliation. 来自 Cambridge English Corpus We are saying the chain topology from the higher w region acts as being the proverbial ' scratch-on-theglass ' necessary while in the organic chemistry laboratory to create crystals. 来自 Cambridge English Corpus The age scatter among the the individual crystals may perhaps reflect incorporation of xenocrysts from before magmatic pulses or protoliths. 来自 Cambridge English Corpus The clinopyroxene types neutral to pale brown, subhedral to anhedral crystals, once in a while made up of inclusions of plagioclase microlaths and opaque phases.

⑥、丝印：水晶表面附有不同的色料进行效果处理，颜色层面较厚，着力后方可脱落。

国家还并未给天然水晶提供一个等级划分的具体标准，水晶品种繁杂，每一品种都有他不同的评判标准。

Crystals are labeled in general groups, like insulators, metals, semiconductors, and molecular more info solids. One crystal of the insulator is usually transparent and resembles a piece of glass. Metals are shiny Except if they have rusted. Semiconductors are occasionally shiny and occasionally transparent but are never rusty. Numerous crystals could be categorized as one style of good, while others have intermediate behaviour. Cadmium sulfide (CdS) might be organized in pure sort and is a superb insulator; when impurities are added to cadmium sulfide, it becomes a fascinating semiconductor.

Fig. five: The chance to realize outlined crystal habits is depending on the symmetry engineering method.