天然的水晶一般都会有絮状（绵绺），也就是大家俗称的瑕疵，这是液体水落石出和二氧化碳的小孔穴，而人工合成的水晶就不会有这样的特征。
Cite While just about every energy has been made to adhere to citation design policies, there might be some discrepancies. Be sure to make reference to the suitable model handbook or other resources In case you have any questions. Find Citation Design and style
A standard idea in crystal structures is the device cell. It is the smallest device of volume that allows equivalent cells for being stacked alongside one another to fill all Area. By repeating the pattern of your unit cell again and again in all directions, the entire crystal lattice could be created. A cube is The best illustration of a unit cell. Two other examples are proven in Determine one. check here The 1st could be the unit mobile for your deal with-centred cubic lattice, and the 2nd is for a entire body-centred cubic lattice. These structures are described in the next paragraphs.
Tetragonal: These crystals kind prisms and double pyramids. The composition is like a cubic crystal, other than one axis is more time than another.
Crystalline composition is characterized by a geometric, repeating sample of symmetric molecular structure. The arrangement of atoms varieties these requested, repeating designs.
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�?。
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。
市场上有很多人把熔炼水晶也叫做合成水晶，那是不准确的，一般都是以水晶废料为原料在高温高压下熔炼出来的，而不是结晶成的，不具备水晶的晶体特性，所以不能把熔炼水晶与合成水晶混为一谈；但是熔炼水晶耐高温，用优质二氧化硅熔炼成的熔炼水晶可以做成实用产品比如水晶杯、烤盘、茶具等，实际上一代伟人毛泽东主席的水晶棺就是选用东海优质水晶熔炼而成的。
水晶是有成色等级之分，影响水晶价位的因素很多，不像钻石以4C就可以判定，所以大家要多听多看多比较才能真正辨别出来。一般的标准是水晶石越大越好，越透越好，颜色越娇嫩越好，形状越典型越好。不过最重要还是自己喜欢，而选购时辨识真伪的方法大致有下列几种：
广义的包裹体是指宝石内部含有的与主晶宝石化学成分、物理性质等不同的物质。
15The trick to a superb thermoelectric product is a crystal composition wherein electrons can flow freely.制造一种好的热电材料的关键是，需要一种电子可以自由流动的晶体结构。
Orthorhombic: They are rhombic prisms and dipyramids that resemble tetragons but without the need of sq. cross-sections.
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。
Tetragonal �?Characterised by three mutually perpendicular axes, two of which are equivalent in length, though the third is for a longer period or shorter and perpendicular to the opposite two.