Not all crystals are Similarly crystalline. There are frequently impurities, along with the ionic & covalent between molecules can create vastly distinctive constructions out of the identical materials. An awesome illustration of this are diamonds and graphene.
the sound point out of numerous straightforward substances, which have a regular shape and surfaces organized in comparable designs
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。
水胆水晶，包括气态，液态，固态，有时候可以同时多态并存，无色居多，个别情况下可见红色，绿色，黄色，蓝色，黑色等。
Monoclinic �?Characterised by 3 unequal axes, two of which intersect at an oblique angle, though the 3rd is perpendicular to your aircraft of the other two.
时尚的收藏爱好者喜欢收藏天然水晶，却常常因为在市场上面对大量的合成水晶看走了眼。市面上的水晶：
②固体包裹体：指呈固态相存在包裹体，多因岩浆、热液、变质作用等形成的早期结晶物被水晶捕获而形成。
24I intend to make my which means crystal clear.我想把我的意思解释得清清楚楚。《牛津词典》
crystal The recently crystallized quartz grains are characterized by elongate crystals oriented oblique to your shear band margins, defining an average grain-form foliation. 来自 Cambridge English Corpus We say the chain topology in the superior w region functions given that Crystal the proverbial ' scratch-on-theglass ' necessary in the natural chemistry laboratory to make crystals. 来自 Cambridge English Corpus The age scatter among the individual crystals may perhaps mirror incorporation of xenocrysts from earlier magmatic pulses or protoliths. 来自 Cambridge English Corpus The clinopyroxene forms neutral to pale brown, subhedral to anhedral crystals, from time to time containing inclusions of plagioclase microlaths and opaque phases.
看孔眼：对于缀穿水晶制品（如项链、手链、佛珠），要看孔眼是否平直，孔的粗细是否均匀，有无细小裂纹。孔壁必须清澈透明，无“白痕”。
水晶的价值还与块体大小有关，同样的颜色和净度级别，块越大越难得。有时候质量级别虽然低一些，但块体够大，也可能价格高于高级别的小晶体
在透明的水晶中，隐裂纹呈亮晶晶的片状，有时还会有晕彩效应。这些裂纹是水晶在生长过程中，遇到外力挤压而在内部产生的一些隐形裂纹，隐裂纹在芙蓉石、紫水晶、白水晶球及白水晶柱中都很常见。有的裂纹后来被物质填充，形成愈合的裂纹，也就是原来的裂纹又长住了。这种裂纹对水晶的影响相对要小一些。
Fig. 5: The ability to comprehend described crystal routines is dependent on the symmetry engineering method.