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 stunning rock formations which have amazed individuals for A large number of many years. These are used for several different things, not only for decoration. A lot of the 1st radios at any time invented utilised crystals to transmit the radio waves. Some instruments, like quartz watches and laser crystals, use Distinctive properties and harmonic capabilities of crystals for making hugely correct measurements and adjustments.
These developments contain exotic constructions with programmable lattice symmetries and well-described crystal patterns, responsive supplies that leverage the intrinsic Homes of nucleic acids to control constructions on desire, nanoparticle superlattices developed epitaxially from surfaces and colloidal crystals that provide insights into light-weight–make a difference interactions. Hunting ahead, we problem the community to leverage the incredible structural control afforded by crystal engineering with DNA to synthesize classes of functional products that force beyond what is doable with naturally taking place crystalline products or All those produced by a lot more traditional methods.
看原料：选料精良的水晶制品，应看不到胶口及棉絮；质地纯净、光润、晶莹为好。
25If you are a Billy Crystal lover, you will enjoy this movie.如果你是比利·克里斯特尔的影迷，你就会喜欢这部电影。《柯林斯英汉双解大词典》
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。
⑦、镀彩：运用类似电镀的手法在水晶表面以不同的色彩，层面较薄，经摩擦可划伤�?；出现划痕，由于镀彩经常位于底部，因此在镀彩底部经常采用其它对象附着，如生肖文镇。
26Some of the best consuming glasses are constructed from direct crystal.一些最精致的酒杯是用铅晶质玻璃制成的。《柯林斯英汉双解大词典》
第三种是“皮景”，因某些其他的矿物与水晶体共生，或由于其他的物质侵蚀而依附于水晶表面，或者是水晶受自然环境的影响，在水晶表面出现蚀象，形成了一些景象或图案，这种景观存在于水晶表面。
The definition of a strong seems clear; a reliable is generally regarded as becoming really hard and company. On inspection, having said that, the definition will become a lot less uncomplicated. A dice of butter, by way of example, is tough just after more info getting saved within a fridge and is also clearly a stable. Right after remaining on the kitchen area counter for daily, the exact same dice gets rather tender, and it truly is unclear If your butter should nonetheless be regarded a sound.
. The 2nd layer is shaded from the determine. It has precisely the same airplane-triangular composition; the atoms sit during the holes shaped by the initial layer. The main layer has two equal sets of holes, however the atoms of the next layer can occupy only one set. The third layer, labeled C
The arrangement of the atom’s electrons establishes its chemical properties. The properties of solids are often predictable from your Attributes of their constituent atoms and molecules, and the several shell constructions of atoms are consequently accountable for the range of solids.
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。
Binary crystals are found in a lot of structures. Some pairs of features variety more than one composition. At home temperature, cadmium sulfide may possibly crystallize possibly within the zinc blende or wurtzite construction. Alumina also has two attainable structures at area temperature, α-alumina (corundum) and β-alumina. Other binary crystals exhibit distinct structures at distinctive temperatures. Among the many most intricate crystals are Individuals of silicon dioxide (SiO2), which has seven various structures at different temperatures and pressures; the most typical of such buildings is quartz.