Top latest Five Crystal Urban news
Top latest Five Crystal Urban news
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其它描述：《庶物异名疏》中说： �?水精出大秦国，一名黎�?�?。结晶完整的水晶晶体，就如参差交错的马齿，所以人们又叫它马牙石。先民们最早用它研磨成眼镜片，因而送它一个眼镜石的绰号。水晶有通称，也有俗称。广州一带称水晶叫晶玉，又名鱼脑冻；江苏东海县山民发现水晶会 �?窜火�?�?，于是给它起个放光石的俗名。世间一物多名，不足为奇，而像水晶拥有这么多的别称，实不多见。瞧，从水玉、水碧、白玉、玉瑛、水精石英、黎难、晶玉到菩萨石、马牙石、眼镜石、放光石、千年冰、高山冻、鱼脑冻等等，简直构成一部奇石鉴赏史。
Bismuth (Bi) seems to generally be a metallic, but the number of electrons available for electrical conduction is analogous to that of semiconductors. In reality, bismuth is known as a semimetal. Molecular solids are generally crystals fashioned from molecules or polymers. They may be insulating, semiconducting, or metallic, depending on the type of molecules during the crystal. New molecules are continuously staying synthesized, and lots of are created into crystals. The number of diverse crystals is gigantic.
一般而言，紫晶和黄晶是水晶中价值较高的品种。两者进一步的分级是据其颜色的深浅，颜色较深的为A级，稍浅的为B级。一般颜色较深的价格高，但要以不深暗为标准。颜色包括两种，一种是水晶本身的颜色，另一种是内部包裹体的颜色。水晶本身的颜色要艳丽、纯正，分布要均匀，不能太深或太浅，如澳州玉、蓝玉髓、紫晶、黄水晶，其价格就高。无色的水晶内含包裹体的颜色艳丽，其价格也高，如钛晶、绿幽灵、红兔毛。紫水晶一般以稍有云状物、颜色深紫、晶体通透的为上品。
Include to phrase list Increase to word listing C2 [ U ] clear glass of incredibly top quality, usually with its area Minimize into fragile styles
There are also numerous resources that resemble crystals but are actually polycrystals. Polycrystals type when microscopic crystals fuse collectively to sort a stable. These components don't include ordered lattices.
⑧、雕刻：立体感强，工艺高，做工精细，成本高。分手工雕刻图形、机器雕刻文字。
水晶与高档宝石的净度要求有很大不同。高档宝石稀少罕见，所以一般人们普遍对高档宝石的净度不会过于苛求。而水晶的产量着实大得惊人，所以通常人们会要求水晶净度越高越好，尽量避免有较明显的内含物的水晶。
Hexagonal �?Characterized by 4 axes, a few of which might be equivalent in duration and intersect at 120 degrees, by using a fourth axis perpendicular to the other three.
Among the binary crystals, the best constructions to visualise are All those with equivalent figures of the two types of atoms. The composition of sodium chloride is predicated on the dice. To assemble the lattice, the sodium and chlorine atoms are placed on alternate corners of the cube, plus the structure is repeated (Figure 3B).
22Working from what The us now appreciates about itself, the bureau's specialists and other demographers present an irresistible, if clouded, crystal ball amid their visions.
被主体水晶所捕获的包裹体。原生包裹体通常为固相，形态较规则。水晶中典型的原成包裹体有金红石、电气石、黄铁矿等，也会见到岩石碎屑或集合体。
Crystals are not just renowned for their physical overall look, but distinctive crystals of various materials and formations may lead to an unlimited variety of utilizes and Bodily Houses.
⑦双色水晶：一种紫色和黄色共存一体的水晶，紫色、黄色之间界限较明显，分别占据晶块的一部分。
A different sort of crystalline carbon relies on a molecule with 60 carbon atoms known as buckminsterfullerene (C60). The molecular form is spherical. Just about every carbon is bonded to a few neighbours, as in graphite, along with the spherical shape is achieved by a mixture of 12 rings with 5 sides and twenty rings with six sides. Related constructions ended up initial visualized from the American architect R. Buckminster Fuller for geodesic website domes.