看颜色：即使在同一种类的水晶中，它的不同部位的纹理、色泽也各式各有千秋。属于单色的，要色度均匀；在同一块水晶上有深浅的，则要求其色调纹路美观大方。
杂质、裂纹越少越好。质地好的水晶制品，应看不到星点状、云雾状和絮状分布的气液包裹体或组成玉石的颗粒。有裂纹、斑点，则属于次品。
一般而言，紫晶和黄晶是水晶中价值较高的品种。两者进一步的分级是据其颜色的深浅，颜色较深的为A级，稍浅的为B级。一般颜色较深的价格高，但要以不深暗为标准。颜色包括两种，一种是水晶本身的颜色，另一种是内部包裹体的颜色。水晶本身的颜色要艳丽、纯正，分布要均匀，不能太深或太浅，如澳州玉、蓝玉髓、紫晶、黄水晶，其价格就高。无色的水晶内含包裹体的颜色艳丽，其价格也高，如钛晶、绿幽灵、红兔毛。紫水晶一般以稍有云状物、颜色深紫、晶体通透的为上品。
诗中道出一段唐代由盛变衰的史实。玄宗末年，杨贵妃得宠，三姐妹并封为国夫人。他们养尊处优，奢华至极，仆人用水晶盘将珍馐佳肴端到宴席上，美人觉得没有口味，懒得动筷子。作为“诗圣”作为“史诗”，紫驼一段写饮食之精美，不空发议论，只尽情揭露事实，无一刺讥语，无一慨叹声，却使人于以外得之：此诗之善讽也。以史为鉴，这样的世道，这样的人物，国家不出“安史之乱”那样的大祸反倒不正常了。
根据美国已经了解的情况，统计局的专家和其他人口统计学家在他们的视野中提供了一个不可抗拒的水晶球。
Lattices could have one lattice place for each cell or multiple, yielding a complete of 14 Bravais crystal lattice types. Bravais lattices, named for physicist and crystallographer Auguste Bravais, describe the three-dimensional array produced by a list of discrete points.
Increase to term record Add to term listing [ C/U ] transparent rock that looks like ice, or a bit of it
Crystals are nothing at all more than an purchased arrangement of molecules or atoms. Crystals can be found in numerous sizes and shapes, and each one has distinct qualities. Whatever they are made of determines how it can form.
水晶包裹体丰富多彩，从气体、液体到各种矿物质，甚至宝石，均可被包含于水晶内，各种包裹体所形成的景象更是变化万千。按照包裹体的内容，常把包裹体水晶分为一下八类：
多色�?无色水晶没有多色性。有色水晶有弱到强的多色�?表现为体色的不同深浅。
Single crystals of metals are gentle and malleable, while polycrystalline metals are more challenging and more robust and are more useful industrially. Crystal Most polycrystalline supplies could be produced into huge one crystals immediately after extended warmth remedy. Prior to now blacksmiths would heat a bit of steel to make it malleable: warmth helps make a couple of grains grow massive by incorporating smaller sized 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, escalating its strength.
Orthorhombic: These are generally rhombic prisms and dipyramids that resemble tetragons but without square cross-sections.
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。
The C60 molecules, also referred to as buckyballs, are pretty sturdy and Nearly incompressible. Crystals are formed such the balls are organized in an fcc lattice which has a 1-nanometre spacing among the centres of adjacent balls. The similar C70 molecule has The form of the rugby ball; C70 molecules also form an fcc crystal when stacked jointly. The solid fullerenes kind molecular crystals, with weak binding—provided by van der Waals interactions—among the molecules.