水晶表面坑洼的地方，有的深，有的浅，这是水晶在成长过程中自然形成的，并非是人为造成的损伤。缺陷位置本来包有其他矿物晶体，由于包裹体和水晶结合部位的结合力不强，当表面抛光时，矿体脱落，留下空位。这种缺陷在绿幽灵、钛晶、金发晶上都比较常见。

⒉棉、云雾或渣状包裹体、杂质在透明水晶内部有雾蒙蒙的现象或是感觉里面像有棉絮状、渣状物质一样的包裹体，这些包裹体的存在，影响水晶的整体美观。还有的水晶内局部含有黑斑或其他颜色的斑状物质，与水晶整体不协调，被视为水晶的杂质，有这种杂质的水晶是次品。

景观水晶，就是包裹体组成各种造型特异的水晶，有的似山水，有的似人物，有些像文字，有些像动物，植物，器物等等。

看原料：选料精良的水晶制品，应看不到胶口及棉絮；质地纯净、光润、晶莹为好。

You will also find lots of elements that resemble crystals but are actually polycrystals. Polycrystals type when microscopic crystals fuse jointly to sort a reliable. These components don't encompass requested lattices.

, has the identical structure, but There's two selections for selecting the holes that the atoms will occupy. The third layer can be put more than the atoms of the main layer, producing an alternate layer sequence A

解理：无解理。所谓解理是指矿物被打击时，沿一定方向有规则地裂开形成光滑平面的性质。根据解理的程度可以分为五类：极完全解理、完全解理、中等解理、不完全解理和无解理，水晶属于无解理。

The elements are found in a variety of crystal packing preparations. The most typical lattice buildings for metals are People received by stacking the atomic spheres into by far the most compact arrangement.

Lots of crystals behave like butter in that they're hard at minimal temperatures but soft at bigger temperatures. They can be known as solids in the least temperatures below their melting position. A achievable definition of the good is surely an object that retains its shape if left undisturbed. The pertinent situation is how much time the object keeps its form. A highly viscous fluid retains its form for an hour although not a 12 months. A strong must hold its form lengthier than that.

颜色：无色，浅至深的紫色，浅黄、中至深黄色，浅至深褐、棕色，绿至黄绿色，浅至中粉红。

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: Complete molecules are bonded to each other in an organized way. A fantastic illustration is usually a sugar crystal, which contains sucrose molecules.

⑨、喷砂：立体感弱，较平整，无凹凸感，机器雕刻文字、图形等后进行效果处理。成本低制作快。

Binary crystals are present in a lot of constructions. Some pairs of features form more than one construction. At place temperature, cadmium sulfide may well crystallize possibly inside the zinc blende or wurtzite construction. check here Alumina also has two possible buildings at place temperature, α-alumina (corundum) and β-alumina. Other binary crystals show distinct constructions at diverse temperatures. One of the most elaborate crystals are People of silicon dioxide (SiO2), which has seven distinctive buildings at different temperatures and pressures; the commonest of such structures is quartz.