对这类水晶晶簇观赏石的欣赏与评价，主要是强调晶体的完整、品种的名贵（如紫水晶、烟晶、发晶等）、造型奇特、含有名贵晶体（如辰砂、辉锑矿等）伴生等。晶簇产于矿床晶洞中，长相完美的并不多见，要完整无损地采集下来，又比较困难，故而采集起来代价较大，精品晶簇价值也就昂贵了。
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。
A basic thought in crystal buildings will be the unit mobile. It is the smallest device of quantity that permits similar cells being stacked with each other to fill all Room. By repeating the pattern in the unit mobile time and again in all directions, the whole crystal lattice could be built. A dice is the simplest example of a unit cell. Two other illustrations are demonstrated in Figure 1. The very first would be the unit mobile for a facial area-centred cubic lattice, and the 2nd is for a overall body-centred cubic lattice. These structures are defined in the following paragraphs.
Include to term listing Increase to term list C2 [ U ] clear glass of quite superior quality, usually with its floor Slash into delicate styles
条痕颜色：无色。矿物粉末的颜色叫条痕。它可以消除假色，减弱他色，保留自色，是比矿物的颜色更为可靠的鉴定特征之一。
结晶�?When sea water is allowed to evaporate, salt crystals are deposited. 海水蒸发后，盐的结晶体就沉淀下来。
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, three of which happen to be equal in duration and intersect at one hundred twenty levels, using a fourth axis perpendicular to one other 3.
24I want to make my which means crystal very clear.我想把我的意思解释得清清楚楚。《牛津词典》
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。
One crystals of metals are tender and malleable, whilst polycrystalline metals are harder and more powerful and tend to be more handy industrially. Most polycrystalline resources could be made into big single crystals soon after extended warmth cure. Before blacksmiths would warmth a piece of metal to really make it malleable: heat tends to make some grains develop get more info big by incorporating smaller ones. The smiths would bend the softened metallic into shape and after that pound it awhile; the pounding would ensure it is polycrystalline once more, expanding its toughness.
Orthorhombic: These are typically rhombic prisms and dipyramids that resemble tetragons but without having sq. cross-sections.
⑦双色水晶：一种紫色和黄色共存一体的水晶，紫色、黄色之间界限较明显，分别占据晶块的一部分。
Tetragonal �?Characterised by a few mutually perpendicular axes, two of which happen to be equivalent in duration, when the 3rd is for a longer time or shorter and perpendicular to the opposite two.