A solid is crystalline if it's got prolonged-selection get. Once the positions of the atom and its neighbours are identified at one place, the location of every atom is thought specifically through the entire crystal. Most liquids lack lengthy-range purchase, Even though several have brief-range purchase. Brief array is described as the main- or next-closest neighbours of an atom. In lots of liquids the initial-neighbour atoms are arranged in exactly the same structure as inside the corresponding strong period.

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人造水晶分为熔炼水晶与养殖晶：据水晶专家汪毅的阐述，随着水晶的价值提高，喜欢的人增多，水晶也引起了作伪者的兴趣，现阶段中国水晶市场常见的造假方法为：

第一种是“全包裹体”，在水晶结晶的时候把这些物质包裹在晶体里面，这类包裹体所形成的各种景象，大多保持了水晶结晶时的原状，也就是说保存了几亿年的原状，极少受到自然环境的影响。

看抛光：抛光的好坏直接影响到水晶制品的身价。抛光分为软抛光与硬抛光。

, has the same structure, but There are 2 alternatives for selecting the holes which the atoms will occupy. The 3rd layer may be positioned about the atoms of the primary layer, building an alternate layer sequence A

对任何宝石来说，颜色都是非常重要的，水晶也不例外。如果是水晶晶体是有颜色的，如粉水晶、黄水晶、紫水晶等，其颜色评价的最高标准则是明艳动人，不带有灰色、黑色、褐色等其他色调。如粉水晶，颜色以粉红为佳；紫水晶，要求颜色为鲜紫，纯净不发黑；黄水晶，要求颜色不含绿色、柠檬色调，以金橘色为佳。对于发晶来说，晶体的颜色也是很重要的。相同发丝的金发晶，晶体完全无色（白水晶）和晶体略偏茶色，肉眼的视觉观感也是有差别的，所以前者的价格会高于后者。

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第三种是“皮景”，因某些其他的矿物与水晶体共生，或由于其他的物质侵蚀而依附于水晶表面，或者是水晶受自然环境的影响，在水晶表面出现蚀象，形成了一些景象或图案，这种景观存在于水晶表面。

Crystals with apparent flat faces are referred to as euhedral crystals, though those lacking defined faces are referred to as anhedral crystals. Crystals consisting of purchased arrays of atoms that aren't normally periodic are identified as quasicrystals.

Single crystals of metals are delicate and malleable, though polycrystalline metals are more durable and more robust and tend to be more practical industrially. Most polycrystalline supplies could be built into substantial one crystals soon after extended warmth cure. Up to now blacksmiths would warmth a piece of metallic to make it malleable: warmth would make website some grains improve significant by incorporating more compact kinds. The smiths would bend the softened metallic into form and after that pound it awhile; the pounding would make it polycrystalline once more, expanding its energy.

水晶形成后由于外力作用或某种人为原因使水晶产生大的裂隙或裂纹，这种裂纹有大有小，对水晶的影响也有大小之分。

玉石纹理如果能形成美丽的花纹、图案，其价格就高，如玛瑙内红白相间的色带有规律地排列，形成缠丝玛瑙时，碧玉中的不均匀颜色形成一种风景图案时，材料的价值将提高。当水晶内包裹体形成美丽的图案时，如幽灵水晶、风景水晶，或者针状包裹体呈束状排列时，其价值都高于普通的水晶。图案越美观、越有意境越好。

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