轴性、光性：一轴晶正光性。正交偏光下所看到的一轴晶干涉图是独特的，其黑十字臂未达中心，形成中空的图案，俗称牛眼干涉图。中心部分通常为淡绿色或淡粉色。

A further enjoyable, and tasty, experiment is usually to variety massive crystals applying sugar. By heating sugar with h2o and after that letting this Option evaporate on sticks, you'll be able to type rock sweet from sugar crystals!

发晶的价值取决于发的颜色、罕见性及大小，一般是发色鲜艳、块度大的价格高。水胆水晶的价值主要取决于水胆及晶体的大小、透明度的高低。如果水胆较大并有一定形态，便可加工成较为珍贵的工艺品。另外水胆中的水也有一定的科学研究价值，通过它们可了解几百万年前地球上水的成分及变化。

Most strong components located in character exist in polycrystalline variety as opposed to as only one crystal. They are literally composed of an incredible number of grains (small crystals) packed with each other to fill all Place. Every unique grain has a special orientation than its neighbours. While extended-assortment get exists within one particular grain, on the boundary concerning grains, the ordering improvements direction. A standard bit of iron or copper (Cu) is polycrystalline.

Fig. 4: Building blocks with different styles and floor chemistries immediate the development of unique crystal symmetries.

发晶，包括钛晶，铜顺发，绿发晶，黑发晶，银发晶，杂色发晶，其中钛晶最珍贵，少数钛晶价值可比钻石，红宝石和蓝宝石以及祖母绿。

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。

Crystals are absolutely nothing greater than an ordered arrangement of molecules or atoms. Crystals are available in a variety of sizes and styles, and each one has distinctive traits. Whatever they are made of decides how it'll variety.

13Nearly all computers consist of a quartz-crystal clock to manage their Procedure.几乎所有的计算机都有一个石英晶体时钟来调节它们的运行。

[ C/U ] clear glass of top of the range, normally with its area Slice into styles that reflect light-weight

16I opened the box and observed a bit of crystal snowflake and also a greeting card with "Pleased Birthday" inside the blank paper.我打开盒子并看见在白纸中有一片水晶雪花和一张写着“生日快乐”的贺卡。

Orthorhombic: These are typically rhombic prisms and dipyramids that resemble tetragons but devoid of sq. cross-sections.

This Evaluate chronicles over two decades of investigate into developing a genetic code for crystal engineering. As an alternative to directing Organic processes, this code works by using artificial types of DNA to programme the assembly of website nanoparticles and microparticles into 1D, 2D and 3D crystalline architectures, in which nearly every element of the resultant buildings could be systematically managed. Within this conceptual framework, the structural and useful improvements are explained in an effort to outline the present volume of sophistication and to forecast potential directions of the platform.

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。