天然的水晶一般都会有絮状（绵绺），也就是大家俗称的瑕疵，这是液体水落石出和二氧化碳的小孔穴，而人工合成的水晶就不会有这样的特征。
Yet another fun, and tasty, experiment will be to variety substantial crystals working with sugar. By heating sugar with drinking water then allowing this Answer evaporate on sticks, you are able to sort rock candy from sugar crystals!
对水晶进行评价主要依据其颜色、透明度、大小、净度、特殊图案及是否有光学效应等方面。以颜色纯正，浓度较高，内部无瑕为好。种类上紫晶最贵，其次为黄晶、烟晶、无色水晶和芙蓉石。有特殊光学效应的水晶的价格更高。
Fig. three: A library of lattice symmetries is often accessed by transforming the particle Main and DNA shell.
C2 [ U ] clear glass of pretty high-quality, typically with its surface Slash into delicate styles:
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�?。
Incorporate to word record Add to word list [ C/U ] clear rock that appears like ice, or perhaps a bit of it
发晶：无色、浅黄、浅褐等，可因含金红石常呈金黄、褐红等色，含电气石常呈灰黑色；含阳起石而呈灰绿色。
Crystals are sometimes considered as something of huge magnificence, and so they are generally utilized with diamonds or other stones to produce parts of jewelry. Nearly all of crystals now are guy-built in laboratories.
[ C/U ] clear glass of top of the range, usually with its surface area Slice into designs that mirror mild
15The trick to a very good thermoelectric substance here is often a crystal structure through which electrons can flow freely.制造一种好的热电材料的关键是，需要一种电子可以自由流动的晶体结构。
Crystallography is definitely the analyze of crystals, and it bargains with all the things from excellent geometric shapes to seemingly random conglomerations of particles and minerals.
Crystals are categorised generally classes, such as insulators, metals, semiconductors, and molecular solids. An individual crystal of the insulator is generally transparent and resembles a bit of glass. Metals are shiny unless they may have rusted. Semiconductors are sometimes shiny and from time to time transparent but are under no circumstances rusty. Many crystals can be classified as one style of good, while some have intermediate conduct. Cadmium sulfide (CdS) might be organized in pure type and is a wonderful insulator; when impurities are included to cadmium sulfide, it becomes a fascinating semiconductor.
Binary crystals are located in many constructions. Some pairs of things variety multiple composition. At home temperature, cadmium sulfide may crystallize either during the zinc blende or wurtzite construction. Alumina also has two probable structures at space temperature, α-alumina (corundum) and β-alumina. Other binary crystals show distinctive buildings at various temperatures. Amongst the most complex crystals are those of silicon dioxide (SiO2), which has seven distinct constructions at numerous temperatures and pressures; the most typical of these constructions is quartz.