轴性、光性：一轴晶正光性。正交偏光下所看到的一轴晶干涉图是独特的，其黑十字臂未达中心，形成中空的图案，俗称牛眼干涉图。中心部分通常为淡绿色或淡粉色。

③、粗抛光：是将模具压出之毛胚，以金刚石盘直接磨出成品之刻线。④、细抛光：在粗抛光之后，以抛光粉来磨成品至晶莹剔透为止。

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。

Include to term record Increase to phrase record C2 [ U ] clear glass of pretty good quality, generally with its floor Slash into sensitive styles

There's also several materials that resemble crystals but are literally polycrystals. Polycrystals sort when microscopic crystals fuse collectively to type a strong. These resources will not encompass purchased lattices.

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�?。

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。

损伤是指水晶由于加工或不小心摔掉、碰撞等原因，人为造成的损坏。它可以是破口，也可以是凹坑等。

包裹体常见有固相、固液气三相组合、空洞以及双晶、色带等。水晶中典型的同生包裹体有自形的锐钛矿、气液两相包体等。

[ C/U ] transparent glass of top of the range, typically with its area Lower into designs that replicate light-weight

There are 2 this sort of feasible periodic arrangements. In Each individual, the first layer has the atoms packed right into a plane-triangular lattice in which every atom has six rapid neighbours. Determine two shows this arrangement for the atoms labeled A

You'll find just a few distinct unit-cell shapes, so many different crystals share only one unit-mobile type. An important characteristic of the device cell is the volume of atoms it consists of. The full variety of atoms in all the crystal may be the range in Each and every mobile multiplied by the volume of device cells. Copper and aluminum (Al) Just about every have a single atom for every device cell, even though zinc (Zn) and sodium chloride have two. Most crystals have only some atoms for every device cell, but there are numerous exceptions. Crystals of polymers, for instance, have A huge number of atoms in Each individual unit mobile.

⑤、打孔：是在水晶成品未完成前，根据其所需打孔之尺寸及位置，以钻头加工，如制表件、笔筒、瓶孔等。

Binary crystals are found in a lot more info of structures. Some pairs of things variety multiple structure. At room temperature, cadmium sulfide may possibly crystallize either in the zinc blende or wurtzite structure. Alumina also has two attainable buildings at place temperature, α-alumina (corundum) and β-alumina. Other binary crystals show various constructions at various temperatures. Among the many most elaborate crystals are those of silicon dioxide (SiO2), which has seven diverse buildings at a variety of temperatures and pressures; the commonest of such structures is quartz.