Top latest Five Crystal Urban news
Top latest Five Crystal Urban news
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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。
Crystals are wonderful rock formations which have surprised human beings for Countless a long time. These are employed for many various things, not only for decoration. Lots of the to start with radios ever invented made use of crystals to transmit the radio waves. Some instruments, like quartz watches and laser crystals, use special Qualities and harmonic capabilities of crystals to generate extremely accurate measurements and changes.
A standard thought in crystal constructions could be the device cell. It's the smallest unit of volume that permits similar cells to generally be stacked with each other to fill all space. By repeating the pattern from the unit mobile over and over in all Instructions, all the crystal lattice is often constructed. A cube is The best illustration of a device cell. Two other examples are demonstrated in Figure one. The very first would be the device cell for any deal with-centred cubic lattice, and the next is for the system-centred cubic lattice. These constructions are stated in the subsequent paragraphs.
Tetragonal: These crystals form prisms and double pyramids. The composition is sort of a cubic crystal, besides just one axis is for a longer time than the other.
C2 [ U ] clear glass of quite superior quality, commonly with its floor Lower into sensitive designs:
第二种是“半包裹体”，在水晶结晶以后，由于受到地球引力的影响而产生的裂隙，晶体外的一些物质通过水晶的裂隙渗透到水晶内部，一部分包裹于水晶之中另一部分露于水晶之外。我们可以看到物质渗进水晶的裂迹，常被称为“通道”，这种包裹体所形成的景象相对地较受自然环境和时间的影响，相应的价值也比较�?。
水晶原石观赏石，从字面意义理解：观赏水晶石的原貌，即经过抛光去皮后的包裹体水晶和原色水晶，不需雕刻不求象形就具有非常高的观赏价值和收藏价值。此类水晶观赏石对质地要求非常之高，水晶晶体通透干净，颜色艳丽，意境鲜明深刻的价值就高，它的价值特点就好比钻石，实实在在石头本身的价值。
26Some of the finest drinking glasses are made from lead crystal.一些最精致的酒杯是用铅晶质玻璃制成的。《柯林斯英汉双解大词典》
水晶常以晶簇、晶洞形式产出，其中水晶洞一般存在于由火山喷发而形成的巨厚熔岩流层的火成岩与玄武岩中。火山喷发时所含的气体或热水溶蚀等作用导致岩层中出现大量的孔隙，当富含硅质矿物的流体进入较薄的熔岩孔隙中，且温、压条件合适时将结晶沉淀出水晶等矿物。
晶体 Silicon crystals developed in a laboratory change light into electrical Electrical power. 在实验室中长成的硅晶体可将光线转变为电能。
⑥、丝印：水晶表面附有不同的色料进行效果处理，颜色层面较厚，着力后方可脱落。
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。
21You all know how once you take a crystal prism and go a beam of daylight by means of it, you obtain a spectrum, which click here looks like a ongoing band of rainbow shades.