Crystal for Dummies
Crystal for Dummies
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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。
Crystals are wonderful rock formations which have astonished humans for A huge number of decades. They can be useful for a lot of various things, not only for decoration. A lot of the to start with radios at any time invented employed crystals to transmit the radio waves. Some devices, like quartz watches and laser crystals, use Distinctive Qualities and harmonic abilities of crystals to generate hugely accurate measurements and changes.
结晶的形状非常细小，需要用显微镜才能看得清楚，外观上看起来是平滑、块状。常见最多的是各式玛瑙
养殖晶：养殖晶是指，用天然水晶做种子，然后赋予天然水晶生长的高压条件，养殖器中有富含二氧化硅的分子。然后二氧化硅分子围绕天然水晶种生长，这样的水晶成分（分子式）与天然水晶是一摸一样的，唯一有差别的是，这样的水晶磁场作用没有天然水晶强。
Fig. four: Creating blocks with different shapes and surface chemistries immediate the development of distinctive crystal symmetries.
Lattices might have just one lattice place for each mobile or multiple, yielding a complete of fourteen Bravais crystal lattice types. Bravais lattices, named for physicist and crystallographer Auguste Bravais, describe the a few-dimensional website array made by a list of discrete points.
水晶内部有多种矿物包裹体，形成的各种景观可以肉眼观测，这样的水晶就是包裹体水晶观赏石。由于水晶本身就是宝石，因此人们称誉包裹体水晶为“宝石级的观赏石”。包裹体水晶观赏石都具有独特性，具有极高欣赏和收藏价值。
1A crystal chandelier lit the home.一盏水晶吊灯照亮了房间。《柯林斯英汉双解大词典》
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：
看文化：水晶里面的包裹体象形，能与文化、宗教及历史有所牵连的话，价格往往会比水晶本身的价值高出几倍甚至几百倍。
16I opened the box and observed a piece of crystal snowflake along with a greeting card with "Happy Birthday" in the blank paper.我打开盒子并看见在白纸中有一片水晶雪花和一张写着“生日快乐”的贺卡。
Molecular Crystals: Complete molecules are bonded to each other within an arranged manner. A good instance is really a sugar crystal, which contains sucrose molecules.
The composition in the sodium atoms on your own, or the chlorine atoms by itself, is fcc and defines the device mobile. The sodium chloride framework thus is produced up of two interpenetrating fcc lattices. The cesium chloride lattice (Figure 3A) is based within the bcc composition; every other atom is cesium or chlorine. In this instance, the unit cell is usually a dice. The third important framework for AB
水晶观赏石是天然水晶中最具代表的作品，具有其他宝石都不具备的观赏性。不论是玉石翡翠还是都要经过雕琢后次能体现他的价值，而水晶观赏石只需要将表面进行抛光，即展现出晶体内所包裹的物质，直接欣赏原汁原味的水晶石。