李商隐,杜牧,白居易,欧阳修,苏轼,呈大昌,辛弃疾,杨万里,吴文英,杨基,魏源等诗坛,词林大家都有歌吟水晶的佳篇传世。
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。
天然水晶是不可再生资源,随着开发的深入,天然水晶存量已越来越少,为了可持续发展,东海县政府早就制定了保护本地资源,鼓励开发海外水晶资源的政策,但是,海外资源也越来越少,很多国家都提高了开采和出口天然水晶的门槛,进入东海市场的外国水晶价格连年暴涨,其中观赏水晶比普通水晶涨价更快。
Include to word record Include to word list C2 [ U ] clear glass of quite superior quality, commonly with its surface Minimize into delicate styles
条痕颜色:无色。矿物粉末的颜色叫条痕。它可以消除假色,减弱他色,保留自色,是比矿物的颜色更为可靠的鉴定特征之一。
结晶�?When sea h2o is allowed to evaporate, salt crystals are deposited. 海水蒸发后,盐的结晶体就沉淀下来。
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:
Crystals are nothing greater than an ordered arrangement of molecules or atoms. Crystals come in many various sizes and styles, and every one has different features. The things they are created of determines how it can kind.
Crystals tend to be viewed as a little something of immense beauty, and they are generally made use of with diamonds or other stones for making parts of jewellery. The vast majority of crystals now are gentleman-created in laboratories.
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。
. The next layer is shaded from the figure. It has the exact same plane-triangular framework; the atoms sit from the holes fashioned by the first layer. The very first layer has two equivalent sets of holes, though the atoms of the 2nd layer can occupy only one set. The third layer, labeled C
The sodium chloride crystal lattice is characterized through the near packing from the constructive sodium ions and negative chloride ions. Each and every sodium ion is surrounded by 6 chloride ions, and each chloride ion is surrounded by 6 sodium check here ions, making a highly secure and symmetrical framework.
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。
⑥白色的包裹体有蚀变的绿泥石、云母、愈合裂隙、水晶、方解石、透闪石等。