看颜色：即使在同一种类的水晶中，它的不同部位的纹理、色泽也各式各有千秋。属于单色的，要色度均匀；在同一块水晶上有深浅的，则要求其色调纹路美观大方。
杂质、裂纹越少越好。质地好的水晶制品，应看不到星点状、云雾状和絮状分布的气液包裹体或组成玉石的颗粒。有裂纹、斑点，则属于次品。
A crystal construction focuses on how the atoms are arranged inside the crystal. On the other hand, crystallographers have an interest in the overall form and sizing on the crystal and its external traits. To accomplish this, they need to understand about the crystal technique.
Most stable products located in nature exist in polycrystalline kind instead of as one crystal. They are literally made up of many grains (modest crystals) packed with each other to fill all House. Every specific grain has another orientation than its neighbours. Though prolonged-selection purchase exists within one particular grain, in the boundary between grains, the purchasing variations route. A standard bit of iron or copper (Cu) is polycrystalline.
《全唐诗》卷七八五载《白雪歌》：“鸟啄冰潭玉镜开，风敲檐溜水晶折。”
Lattices could possibly have one particular lattice issue for each cell or multiple, yielding a complete of 14 Bravais crystal lattice kinds. Bravais lattices, named for physicist and crystallographer Auguste Bravais, describe the a few-dimensional array made by a set of discrete factors.
水晶的评价标准和高端宝石有所不同。多数高端宝石把颜色放在评价的第一位，而对水晶来说，颜色和净度（水晶行业称作晶体）是近乎同等重要的因素：
Crystals are absolutely nothing a lot more than an requested arrangement of molecules or atoms. Crystals come in many alternative shapes and sizes, and each has distinct characteristics. Whatever they are created of decides how it'll variety.
本词条由中国科学院大学地球与行星科学学院、中国科学院地质与地球物理研究所 参与编辑并审核，经科普中国·科学百科认�?。
crystal The newly crystallized quartz grains are characterised by elongate crystals oriented oblique for the shear band margins, defining a normal grain-condition foliation. 来自 Cambridge English Corpus We are saying the chain topology while in the high w area functions given that the proverbial ' scratch-on-theglass ' required within the organic and natural chemistry laboratory to create crystals. 来自 Cambridge English Corpus The age scatter between the person crystals might mirror incorporation of here xenocrysts from previously magmatic pulses or protoliths. 来自 Cambridge English Corpus The clinopyroxene kinds neutral to pale brown, subhedral to anhedral crystals, at times containing inclusions of plagioclase microlaths and opaque phases.
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。
Orthorhombic: They're rhombic prisms and dipyramids that resemble tetragons but without the need of square cross-sections.
crystal, any sound material wherein the part atoms are arranged inside of a definite sample and whose floor regularity reflects its interior symmetry.
Sensible Vocabulary: similar terms and phrases Geology: mineralogy beneficiation crystalline deposit gemologist gemology gold dust graphite idiomorphic intercrystalline like gold dust idiom magnesium mineral nugget pyrite quasicrystal seam silicon unmined vermiculite vulcanicity See additional results » You can even discover linked terms, phrases, and synonyms during the subjects: