Top Guidelines Of Crystal
Top Guidelines Of Crystal
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27Local economists have appeared into their crystal balls and witnessed a little something somewhat unpleasant.当地的经济学者们已预测到将会出现棘手的问题。《柯林斯英汉双解大词典》
按照透明度指标，水晶越透明，价格越高，好的透明的水晶加工出的成品晶莹剔透、光辉耀眼。透明度高的水晶能提升颜色的艳丽，否则显得呆板无灵性。光学水晶要求全透明、无双晶、无杂质。工艺水晶要求透明、少裂、少瑕疵。熔炼水晶要求透明，可有较多裂纹。三者价值依次降低，熔炼水晶只能作为熔炼水晶玻璃的原料。在工艺水晶中，晶体较大的，可用来做水晶眼镜和雕刻高档工艺品，因而价格较高。
These advancements include things like exotic constructions with programmable lattice symmetries and very well-described crystal behaviors, responsive elements that leverage the intrinsic Qualities of nucleic acids to manipulate structures on desire, nanoparticle superlattices developed epitaxially from surfaces and colloidal crystals which provide insights into light–subject interactions. Searching ahead, we problem the Neighborhood to leverage the remarkable structural Regulate afforded by crystal engineering with DNA to synthesize classes of useful products that force beyond what has been possible with By natural means taking place crystalline elements or People created by additional typical approaches.
Tetragonal: These crystals variety prisms and double pyramids. The construction is sort of a cubic crystal, except one axis is for a longer time than the opposite.
水胆水晶，包括气态，液态，固态，有时候可以同时多态并存，无色居多，个别情况下可见红色，绿色，黄色，蓝色，黑色等。
当二氧化硅结晶完美时就是水晶；结晶不完美的就是石英：二氧化硅胶化脱水后就是玛瑙；二氧化硅含水的胶体凝固后就成为蛋白石；二氧化硅晶粒小于几微米时，就组成玉髓、燧石、次生石英岩。
⑩、雷射内雕：以计算机辅助激光设备在水晶对象中进行三维图案的成型，艺术效果好，可以任意表达各类图案，图形，达到逼真效果
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仿制钛晶树水晶：钛晶是水晶里价格最昂贵的，造假者当然也不会放过这么好的产品。天然的环境下，在水晶里能生长个像树一样的钛晶，完全是可能的，只是这样的货很少，那我们的造假专家是如何做的呢，白水晶底下打个洞，激光打点成板状的钛晶进去，就这样这块水晶的身价就能飙升几十倍。往往有的钛晶戒面，会采用将钛晶部位割成板状，与圆面的水晶粘合的方法来制作。
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 delicate and malleable, whilst polycrystalline metals are tougher and more powerful and are more helpful industrially. Most polycrystalline components could be built into significant single crystals soon after extended heat therapy. In the past blacksmiths would warmth a bit of steel to here really make it malleable: warmth will make a number of grains develop massive by incorporating smaller sized ones. The smiths would bend the softened metallic into form after which you can pound it awhile; the pounding would make it polycrystalline yet again, escalating its toughness.
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
⑨、喷砂：立体感弱，较平整，无凹凸感，机器雕刻文字、图形等后进行效果处理。成本低制作快。
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。