Calcite crystals tend to be Utilized in optical products, and in some cases the graphite in pencil guide are sheets of crystals that effectively break aside layer by layer to jot down. Silica can type silicate crystals which can be the basis for quartz, mica, olivine, and all kinds of other crystals and minerals.
23Sometimes, even so, the crystal kind of the silicate inclusions is observed to resemble far more closely the internal structure of diamond than that of other silicate minerals.然而，有时观察到硅酸盐包裹体的晶体形态比其他硅酸盐矿物更接近金刚石的内部结构。
一般而言，紫晶和黄晶是水晶中价值较高的品种。两者进一步的分级是据其颜色的深浅，颜色较深的为A级，稍浅的为B级。一般颜色较深的价格高，但要以不深暗为标准。颜色包括两种，一种是水晶本身的颜色，另一种是内部包裹体的颜色。水晶本身的颜色要艳丽、纯正，分布要均匀，不能太深或太浅，如澳州玉、蓝玉髓、紫晶、黄水晶，其价格就高。无色的水晶内含包裹体的颜色艳丽，其价格也高，如钛晶、绿幽灵、红兔毛。紫水晶一般以稍有云状物、颜色深紫、晶体通透的为上品。
水碧：《山海经》中，水晶又被称作水碧： �?又南三百里，日耿山，无草木，多水碧 �?，郭璞注�?�?亦水玉类 ”。这种称谓常被文人所引用，晋代郭景纯《璞江赋》道�?�?鬼，水碧�?�?。水晶又有人称它叫玉瑛。《符瑞图》载�?美石似玉，水精谓之玉瑛也�?”
Fig. four: Constructing blocks with various designs and area chemistries immediate the formation of distinctive crystal symmetries.
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。
光泽：玻璃光泽。断口处为油脂光泽。光泽，指宝石表面对光线反射的一种光学性质。观察水晶的光泽，可用手握着它，以灯光或窗户投进来的光线看表面反射，透明水晶亮度与光泽强弱有关。
11I very carefully opened the bundle and found a crystal bell inside of.我小心地打开包裹，发现里面有一个水晶钟。
13Nearly all personal computers have a quartz-crystal clock to regulate their operation.几乎所有的计算机都有一个石英晶体时钟来调节它们的运行。
幽灵水晶，分绿幽灵，红幽灵，白幽灵等，主要组成为绿泥石，其中绿幽灵属于珍贵品种。
Search cryptosporidiosis cryptosporidium cryptozoologist cryptozoology crystal crystal ball crystal crystal clear idiom crystal lattice BETA copyright #randomImageQuizHook.filename #randomImageQuizHook.isQuiz Take a look at your vocabulary with our entertaining graphic quizzes
You can find only a few diverse unit-cell designs, so many various crystals share only one device-mobile kind. An essential attribute of a device mobile is the number of atoms it has. The total quantity of atoms in your complete crystal would be the variety in each cell multiplied by the volume of device cells. Copper and aluminum (Al) Each individual have a person atom for every unit cell, when zinc (Zn) and sodium chloride have two. Most crystals have only some atoms for each unit cell, but there are a few exceptions. Crystals of polymers, as an example, click here have 1000s of atoms in Each and every device mobile.
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。
⑥白色的包裹体有蚀变的绿泥石、云母、愈合裂隙、水晶、方解石、透闪石等。