看颜色：即使在同一种类的水晶中，它的不同部位的纹理、色泽也各式各有千秋。属于单色的，要色度均匀；在同一块水晶上有深浅的，则要求其色调纹路美观大方。
the good state of many straightforward substances, that have a regular form and surfaces organized in comparable patterns
人造水晶分为熔炼水晶与养殖晶：据水晶专家汪毅的阐述，随着水晶的价值提高，喜欢的人增多，水晶也引起了作伪者的兴趣，现阶段中国水晶市场常见的造假方法为：
Tetragonal: These crystals sort prisms and double pyramids. The framework is sort of a cubic crystal, apart from one particular axis is longer than another.
Crystalline composition is characterised by a geometrical, repeating pattern of symmetric molecular framework. The arrangement of atoms varieties these ordered, repeating 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�?。
30Three times went past, and I used to be stunned to check out it again: many of the openings have been sewed up by skinny and white thread they usually seemed much like the ice crystal on Winter season's branches during the north.
Like a sizzling Alternative cools or a saturated solution evaporates, particles attract near sufficient for chemical bonds to variety. Crystals might also type from deposition directly from the gas period. Liquid crystals possess particles oriented within an structured method, like stable crystals, still are able to move.
Among the binary crystals, the simplest structures here to visualise are All those with equal figures of the two forms of atoms. The framework of sodium chloride relies on the dice. To assemble the lattice, the sodium and chlorine atoms are put on alternate corners of the cube, along with the construction is repeated (Figure 3B).
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地质学家目前为止对晶洞形成还没有广泛认同的理论，但相信晶洞可以在任何埋藏的空腔内形成。这些空腔可以是火成岩中的气泡、树根下的空穴，甚至动物挖的地洞。经过漫长时间，空腔的外壁变硬，溶解的矽酸盐或方解石沉积到内壁。再经过漫长的时间，缓慢渗入的矿物使得晶体在空腔内部结晶。
Fig. one: Schematic of crystal development from developing blocks made up of a particle Main along with a shell of DNA ligands connected on the particle area.
This Evaluation chronicles over 20 years of research into creating a genetic code for crystal engineering. In lieu of directing Organic processes, this code works by using synthetic varieties of DNA to programme the assembly of nanoparticles and microparticles into 1D, 2nd and 3D crystalline architectures, in which nearly every element of the resultant constructions may be systematically managed. Inside this conceptual framework, the structural and practical innovations are explained in order to determine the current degree of sophistication and also to predict upcoming Instructions on the platform.
Intelligent Vocabulary: connected terms and phrases Geology: mineralogy beneficiation crystalline deposit gemologist gemology gold dust graphite idiomorphic intercrystalline like gold dust idiom magnesium mineral nugget pyrite quasicrystal seam silicon unmined vermiculite vulcanicity See more benefits » It's also possible to come across associated words and phrases, phrases, and synonyms from the subject areas: