Crystal Secrets
Crystal Secrets
Blog Article
对这类水晶晶簇观赏石的欣赏与评价，主要是强调晶体的完整、品种的名贵（如紫水晶、烟晶、发晶等）、造型奇特、含有名贵晶体（如辰砂、辉锑矿等）伴生等。晶簇产于矿床晶洞中，长相完美的并不多见，要完整无损地采集下来，又比较困难，故而采集起来代价较大，精品晶簇价值也就昂贵了。
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。
水晶文化历史悠久，古人曾赋予它一串极富美感的雅称：水玉、水精、水碧、石英等。
看原料：选料精良的水晶制品，应看不到胶口及棉絮；质地纯净、光润、晶莹为好。
You can also find many elements that resemble crystals but are actually polycrystals. Polycrystals type when microscopic crystals fuse collectively to kind a solid. These resources never consist of requested lattices.
, has precisely the same construction, but There's two decisions for selecting the holes that the atoms will occupy. The 3rd layer is usually positioned above the atoms of the 1st layer, making an alternate layer sequence A
水晶的评价标准和高端宝石有所不同。多数高端宝石把颜色放在评价的第一位，而对水晶来说，颜色和净度（水晶行业称作晶体）是近乎同等重要的因素：
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。
Crystals are frequently seen as a little something of immense attractiveness, plus they are commonly utilised with diamonds or other stones to generate items of jewellery. The vast majority of crystals now are guy-made in laboratories.
22Working from what The usa presently knows about alone, the bureau's authorities together with other demographers give an irresistible, if clouded, crystal ball between their visions.
天然性是水晶观赏石的基本特性。通常整体造型水晶矿物不饰雕琢就具备很高的观赏价值，但是包裹体水晶观赏石经常需要适当打磨抛光，这样更方便观赏水晶内部的包裹体。
国家还并未给天然水晶提供一个等级划分的具体标准，水晶品种繁杂，每一品种都有他不同的评判标准。
14For instance, We have now Quartz crystal clocks and watches precise to in 1 minute a year.例如，我们使用的每年误差不超过one分钟的石英水晶钟表和手表。
The C60 molecules, also known as buckyballs, are fairly solid and Just about incompressible. Crystals are fashioned this kind of which the balls are arranged within an fcc lattice get more info using a a single-nanometre spacing in between the centres of adjacent balls. The similar C70 molecule has The form of the rugby ball; C70 molecules also sort an fcc crystal when stacked alongside one another. The solid fullerenes form molecular crystals, with weak binding—provided by van der Waals interactions—amongst the molecules.