17These rings are indicative with the crystal construction of nickel and might be discussed only by invoking wavelike Qualities of light.这些光圈表明了了镍的晶体结构，而且只能通过光线中波的特征来解释。
Crystals are stunning rock formations that have astonished individuals for A huge number of many years. They are employed for several various things, not only for decoration. Many of the initial radios at any time invented made use of crystals to transmit the radio waves. Some devices, like quartz watches and laser crystals, use Unique Homes and harmonic capabilities of crystals to produce highly exact measurements and changes.
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。
Tetragonal: These crystals kind prisms and double pyramids. The structure is sort of a cubic crystal, apart from just one axis is longer than another.
《全唐诗》卷七八五载《白雪歌》：“鸟啄冰潭玉镜开，风敲檐溜水晶折。”
Learn the way the shape on the crystals determine the several minerals into familiesMinerals crystallize In keeping with considered one of seven motifs, called crystal devices.
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。
The weather are discovered in a variety of crystal packing preparations. The commonest lattice constructions for metals are All those received by stacking the atomic spheres into one of the most compact arrangement.
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看文化：水晶里面的包裹体象形，能与文化、宗教及历史有所牵连的话，价格往往会比水晶本身的价值高出几倍甚至几百倍。
Single crystals of metals are soft and malleable, though polycrystalline metals are harder and more powerful and are more useful industrially. Most polycrystalline supplies is usually manufactured into substantial solitary crystals after extended heat remedy. In the past blacksmiths would warmth a piece of get more info steel to really make it malleable: heat can make a couple of grains grow large by incorporating more compact kinds. The smiths would bend the softened steel into condition after which pound it awhile; the pounding would allow it to be polycrystalline yet again, growing its toughness.
Fig. 1: Schematic of crystal formation from making blocks made up of a particle Main plus a shell of DNA ligands connected to the particle floor.
压电性：水晶晶体受到压力时会产生电荷；反之，受到电压作用时，晶体会产生频率很高的振动。水晶具有可使压力与电荷相互转移的性能，称压电性。
水晶观赏石在形态、质地、内部特征等方面往往十分奇异。大自然有无限风光，都可以在包裹体水晶种找到缩影。