水晶表面坑洼的地方，有的深，有的浅，这是水晶在成长过程中自然形成的，并非是人为造成的损伤。缺陷位置本来包有其他矿物晶体，由于包裹体和水晶结合部位的结合力不强，当表面抛光时，矿体脱落，留下空位。这种缺陷在绿幽灵、钛晶、金发晶上都比较常见。
水晶原石观赏石充分体现了天然水晶的本质，经过抛光的水晶原石观赏石，玲珑剔透、晶莹璀璨，独具匠心的设计，恰到好处地显露出水晶的魅力。如果您想单纯的欣赏水晶，水晶原石观赏石是你的不二之选，给人一种返璞归真的感觉。
结晶的形状非常细小，需要用显微镜才能看得清楚，外观上看起来是平滑、块状。常见最多的是各式玛瑙
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Fig. 4: Building blocks with unique styles and surface area chemistries direct the formation of unique crystal symmetries.
Not all crystals variety in drinking water, but nearly all crystals type the identical way, atoms occur with each other and become a uniformed cluster. The process normally takes as tiny as a few days to possibly a thousand yrs. All-natural crystals that originate from the Earth variety the exact same way.
水晶的评价标准和高端宝石有所不同。多数高端宝石把颜色放在评价的第一位，而对水晶来说，颜色和净度（水晶行业称作晶体）是近乎同等重要的因素：
1A crystal chandelier lit the space.一盏水晶吊灯照亮了房间。《柯林斯英汉双解大词典》
水晶常以晶簇、晶洞形式产出，其中水晶洞一般存在于由火山喷发而形成的巨厚熔岩流层的火成岩与玄武岩中。火山喷发时所含的气体或热水溶蚀等作用导致岩层中出现大量的孔隙，当富含硅质矿物的流体进入较薄的熔岩孔隙中，且温、压条件合适时将结晶沉淀出水晶等矿物。
A crystal process refers to the classification of crystals based upon the geometric arrangement and symmetry of their lattice structures. There are actually seven most important crystal methods:
Solitary crystals of metals are smooth and malleable, whilst polycrystalline metals are more difficult and more powerful and tend to be more helpful industrially. Most polycrystalline elements could be made into significant one Crystal crystals right after prolonged warmth procedure. Up to now blacksmiths would heat a piece of steel to really make it malleable: heat tends to make a few grains mature massive by incorporating lesser kinds. The smiths would bend the softened steel into form and afterwards pound it awhile; the pounding would help it become polycrystalline all over again, rising its strength.
隐晶类水晶外观是一块块的，不是成六角水晶簇状，但他们却也是属六方晶系的。但我们不能以肉眼观察到他们的六角形结晶，因为结晶的体积极为细小，需以显微镜协助下才能看到六角开结晶。而此类水晶非常平滑，因为结晶之间有“水化硅石”填补，玛瑙便属于此类。
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水晶的价值根据品质、块体的大小、美感和产量多少的不同相差较大。遇到好的天然水晶要敢于下手，但好的水晶一般大家都想得到，值与不值，就要看经验了。由于天然水晶的开采和制作原因，没有瑕疵的水晶很难得到，纯净的饰品要达到与合成水晶媲美的品质，实在是很难得。另外，由于水晶的特性，在佩戴过程中，也会改变其等级，比如因为某种原因，有可能会逐渐产生较大裂纹。