A strong is crystalline if it's extended-array purchase. As soon as the positions of the atom and its neighbours are identified at 1 point, the location of each atom is thought exactly through the crystal. Most liquids lack extended-assortment purchase, Though several have brief-range order. Limited variety is described as the first- or second-nearest neighbours of the atom. In many liquids the very first-neighbour atoms are organized in a similar composition as inside the corresponding sound phase.
the strong state of numerous easy substances, which have an everyday form and surfaces organized in very similar designs
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。
Fig. 7: A template-directed technique can Handle the placement of constructing blocks on a area during the development of sophisticated constructions.
2She was putting on a strand of crystal beads.她戴着一串水晶珠子。《柯林斯英汉双解大词典》
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。
石英：《广雅》称水晶叫石英，色白如莹者又叫白。为附的异形字。司马相如《子虚赋》就�?�?雌黄�?�?之句。苏林解释：�?�?，白石英�?”。
Crystals can be grown beneath average situations from all 92 By natural means occurring elements apart from helium, and helium might be crystallized at small temperatures by using twenty five atmospheres of force.
Q.four. What is the distinction between atomic composition and crystal framework? Ans. The principal distinction between atomic construction and crystal framework lies of their definitions: atomic composition refers to how atoms are structured inside of a one molecule or possibly a cluster of molecules, While crystal composition problems the specific arrangement of atoms within a reliable material.
看文化：水晶里面的包裹体象形，能与文化、宗教及历史有所牵连的话，价格往往会比水晶本身的价值高出几倍甚至几百倍。
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。
Molecular Crystals: Entire molecules are bonded to each other in an structured way. A superb case in point can be a sugar crystal, which is made up of sucrose molecules.
Crystals are labeled normally types, such as insulators, metals, semiconductors, and molecular solids. A single crystal of an insulator is normally transparent and resembles a bit of glass. Metals are shiny Unless of course more info they may have rusted. Semiconductors are sometimes shiny and from time to time transparent but are by no means rusty. Quite a few crystals could be labeled as an individual variety of strong, while others have intermediate behaviour. Cadmium sulfide (CdS) may be organized in pure kind and is an excellent insulator; when impurities are added to cadmium sulfide, it becomes a fascinating semiconductor.
Binary crystals are located in quite a few structures. Some pairs of aspects type more than one composition. At room temperature, cadmium sulfide may perhaps crystallize both inside the zinc blende or wurtzite framework. Alumina also has two feasible constructions at home temperature, α-alumina (corundum) and β-alumina. Other binary crystals exhibit distinctive constructions at diverse temperatures. Among the many most complicated crystals are Individuals of silicon dioxide (SiO2), that has 7 different constructions at various temperatures and pressures; the most typical of those structures is quartz.