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。
水晶原石观赏石充分体现了天然水晶的本质，经过抛光的水晶原石观赏石，玲珑剔透、晶莹璀璨，独具匠心的设计，恰到好处地显露出水晶的魅力。如果您想单纯的欣赏水晶，水晶原石观赏石是你的不二之选，给人一种返璞归真的感觉。
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 good materials found in character exist in polycrystalline sort rather then as an individual crystal. They are actually composed of an incredible number of grains (small crystals) packed alongside one another to fill all Area. Just about every personal grain has a special orientation than its neighbours. Whilst extended-selection get exists in 1 grain, within the boundary involving grains, the purchasing alterations course. An average bit of iron or copper (Cu) is polycrystalline.
There are also numerous products that resemble crystals but are actually polycrystals. Polycrystals kind when microscopic crystals fuse with each other to variety a solid. These components don't consist of ordered lattices.
Find out how The form with the crystals determine the several minerals into familiesMinerals crystallize As outlined by among 7 motifs, often called crystal programs.
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：
Hexagonal �?Characterized by 4 axes, a few of that happen to be equivalent in size and intersect at 120 levels, using a fourth axis perpendicular to the opposite 3.
Among the binary crystals, the simplest buildings to visualize are People with equal figures of the two types of atoms. The structure of sodium chloride is based over a dice. To assemble the lattice, the sodium and chlorine atoms are put on alternate corners of the cube, and the structure is repeated (Figure 3B).
⑤化学稳定�?非常好，在常温下仅溶解于氢氟酸，不溶解于其它各类酸、碱。在高温高压条件下可溶解于碳酸钠溶液中。
Solitary crystals of metals are soft and malleable, when polycrystalline metals are harder and much better and tend to be more practical industrially. Most polycrystalline resources is usually designed into big one crystals following prolonged warmth remedy. Previously blacksmiths would warmth a bit of metallic to make it malleable: heat tends to make a number of grains grow big by incorporating more compact kinds. The smiths would bend the softened steel into condition then pound it awhile; the pounding would help it become polycrystalline yet again, rising its power.
Fig. one: Schematic of crystal formation from constructing blocks made up of a particle core and also a shell of DNA ligands hooked up to the particle area.
This Review chronicles about two decades of investigation into developing a genetic code for crystal engineering. As opposed to directing Organic procedures, this code takes advantage of synthetic varieties of DNA to programme the assembly of nanoparticles and microparticles into 1D, 2D and 3D crystalline architectures, in which just about each and every element of the resultant read more buildings is usually systematically managed. Inside this conceptual framework, the structural and purposeful advances are explained in order to define the current level of sophistication and to predict foreseeable future Instructions from the platform.
水晶的价值根据品质、块体的大小、美感和产量多少的不同相差较大。遇到好的天然水晶要敢于下手，但好的水晶一般大家都想得到，值与不值，就要看经验了。由于天然水晶的开采和制作原因，没有瑕疵的水晶很难得到，纯净的饰品要达到与合成水晶媲美的品质，实在是很难得。另外，由于水晶的特性，在佩戴过程中，也会改变其等级，比如因为某种原因，有可能会逐渐产生较大裂纹。