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。

Bismuth (Bi) appears to become a metallic, but the volume of electrons accessible for electrical conduction is similar to that of semiconductors. In actual fact, bismuth is called a semimetal. Molecular solids are often crystals fashioned from molecules or polymers. They can be insulating, semiconducting, or metallic, based on the kind of molecules during the crystal. New molecules are continually becoming synthesized, and plenty of are created into crystals. The amount of diverse crystals is big.

晶及其石英岩类玉石是中低档宝玉石，虽比不上钻石、红蓝宝石的高贵，但在加工中如果构思巧妙而且加工精细，同样具有很高的价值。如中国传统的玛瑙“虾盘”、“龙盘”、“水漫金山�?水胆玛瑙摆件)都被誉为国家级宝玉石。

If you wish to see how crystals are fashioned, you may do some project in the pretty individual kitchen and find out the formation with the crystals take place with the individual eyes . This can be done by putting a small degree of table salt into some normal faucet drinking water, wait 24 several hours, and you'll see good cubed formations. This occurs as the drinking water is evaporating, which triggers the atoms that make up the salt (the mineral) as well as drinking water to return closer jointly.

条痕颜色：无色。矿物粉末的颜色叫条痕。它可以消除假色，减弱他色，保留自色，是比矿物的颜色更为可靠的鉴定特征之一。

结晶�?When sea water is allowed to evaporate, salt crystals are deposited. 海水蒸发后，盐的结晶体就沉淀下来。

对任何宝石来说，颜色都是非常重要的，水晶也不例外。如果是水晶晶体是有颜色的，如粉水晶、黄水晶、紫水晶等，其颜色评价的最高标准则是明艳动人，不带有灰色、黑色、褐色等其他色调。如粉水晶，颜色以粉红为佳；紫水晶，要求颜色为鲜紫，纯净不发黑；黄水晶，要求颜色不含绿色、柠檬色调，以金橘色为佳。对于发晶来说，晶体的颜色也是很重要的。相同发丝的金发晶，晶体完全无色（白水晶）和晶体略偏茶色，肉眼的视觉观感也是有差别的，所以前者的价格会高于后者。

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。

Among the many binary crystals, the simplest buildings to check here visualize are People with equal numbers of the two sorts of atoms. The construction of sodium chloride is based on the dice. To assemble the lattice, the sodium and chlorine atoms are placed on alternate corners of the cube, as well as composition is repeated (Determine 3B).

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 good thermoelectric substance is really a crystal composition through which electrons can move 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。

的释�?浏览 cryptologist cryptology cryptorchidism cryptosporidium crystal crystal ball crystal apparent idiom copyright crystalline #randomImageQuizHook.filename #randomImageQuizHook.isQuiz 用我们的趣味配图小测验考考你的词汇量

14For case in point, We've Quartz crystal clocks and watches precise to within just one moment a 12 months.例如，我们使用的每年误差不超过one分钟的石英水晶钟表和手表。

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。