8Where do we get this magic wand and crystal ball?我们到哪里获得这种魔棒和水晶玻璃球？

①压电效�?在机械力(压力或拉�?作用下，水晶单晶体的两端会产生电荷，其电量相等但符号相反。在工业上，无色、无缺陷、不具双晶的水晶常被用来作压电石英片。

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

Fig. 3: A library of lattice symmetries might be accessed by changing the particle Main and DNA shell.

Fig. four: Making blocks with distinct styles and surface chemistries direct the formation of distinct crystal symmetries.

Not all crystals form in h2o, but almost all crystals kind the identical way, atoms come together and become a uniformed cluster. The method may take as minimal as a few days to perhaps a thousand many years. Natural crystals that come from the Earth variety a similar way.

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：

市场上有很多人把熔炼水晶也叫做合成水晶，那是不准确的，一般都是以水晶废料为原料在高温高压下熔炼出来的，而不是结晶成的，不具备水晶的晶体特性，所以不能把熔炼水晶与合成水晶混为一谈；但是熔炼水晶耐高温，用优质二氧化硅熔炼成的熔炼水晶可以做成实用产品比如水晶杯、烤盘、茶具等，实际上一代伟人毛泽东主席的水晶棺就是选用东海优质水晶熔炼而成的。

Numerous crystals behave like butter in that they are really hard at small temperatures but tender at higher temperatures. They're called solids in the slightest degree temperatures below their melting place. A achievable definition of the sound is undoubtedly an object that retains its form if still left undisturbed. The pertinent challenge is just how long the object keeps its condition. A very viscous fluid retains its shape for an hour although not a year. A good will have to continue to keep its shape more time than that.

The definition of a strong appears noticeable; a sound is usually more info thought of as becoming challenging and agency. Upon inspection, even so, the definition gets to be a lot less clear-cut. A cube of butter, as an example, is tough immediately after getting saved within a fridge and is Obviously a reliable. Soon after remaining to the kitchen area counter for every day, a similar cube results in being fairly delicate, and it really is unclear If your butter need to however be considered a reliable.

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。

水晶观赏石是天然水晶中最具代表的作品，具有其他宝石都不具备的观赏性。不论是玉石翡翠还是都要经过雕琢后次能体现他的价值，而水晶观赏石只需要将表面进行抛光，即展现出晶体内所包裹的物质，直接欣赏原汁原味的水晶石。