How Much You Need To Expect You'll Pay For A Good Crystal
How Much You Need To Expect You'll Pay For A Good Crystal
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This concept applies Similarly in a single, two, and 3-dimensional Areas. All the crystal lattice is usually made by consistently reproducing the pattern from the device cell in all Instructions.
the sound point out of numerous basic substances, that have a regular condition and surfaces arranged in equivalent styles
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。
Significant crystals of diamond are valuable gemstones. The crystal has other attention-grabbing Qualities; it's the best seem velocity of any strong and is the best conductor of heat. Aside from diamond, the other common kind of carbon is graphite, which can be a layered materials. Each carbon atom has 3 coplanar close to neighbours, forming an arrangement known as the honeycomb lattice. A few-dimensional graphite crystals are acquired by stacking related levels.
Crystalline framework is characterized by a geometrical, repeating sample of symmetric molecular structure. The arrangement of atoms varieties these ordered, repeating designs.
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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。
发晶：无色、浅黄、浅褐等，可因含金红石常呈金黄、褐红等色，含电气石常呈灰黑色；含阳起石而呈灰绿色。
Metallic Crystals: Metals normally kind metallic crystals, in which many of the valence electrons are free to move all through the lattice. Iron, one example is, can form different metallic crystals.
[ C/U ] clear glass of high quality, generally with its floor cut into designs that mirror gentle
16I opened the box and noticed a bit of crystal snowflake along with a greeting card with "Joyful 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。
水晶形成后由于外力作用或某种人为原因使水晶产生大的裂隙或裂纹，这种裂纹有大有小，对水晶的影响也有大小之分。
crystal, any reliable materials by which the component atoms are arranged within a definite pattern and whose floor regularity reflects its internal symmetry.
Yet another type of crystalline carbon relies with a molecule with 60 carbon atoms named buckminsterfullerene (C60). The molecular form is spherical. Each individual carbon is bonded to 3 neighbours, as in graphite, plus the spherical shape is achieved by a combination of twelve rings with five sides and twenty rings with six sides. Comparable constructions were being 1st visualized from the American architect R. Buckminster Fuller for geodesic domes.