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A crystallographic form is described by placing the Miller indices of one of its faces within brackets. For example, the octahedral form is written as {111}, and the other faces in the form are implied by the symmetry of the crystal. Forms may be closed, meaning that the form can completely enclose a volume of space, or open, meaning that it ...
Crystal is a transparent mineral resembling glass, most probably a variety of quartz. Job places it in the same category with gold, onyx, sapphire, glass, coral, topaz, etc. The Targum renders the qrt of Ezech. as "ice"; the other versions translate it as "crystal". Crystal is again mentioned in Apoc., iv, 6; xxi, 11; xxii, 1.
Group of precious and semiprecious stones—both uncut and faceted—including (clockwise from top left) diamond, uncut synthetic sapphire, ruby, uncut emerald, and amethyst crystal cluster. A gemstone (also called a fine gem , jewel , precious stone , semiprecious stone , or simply gem ) is a piece of mineral crystal which, when cut or ...
Crystal (/ ˈ k r ɪ s t əl /) is a common English language female given name. Variant forms of the name include Kristal, Krystal, Cristal, Kristel, Krystle and Kristol.. As a feminine name, it is a 19th-century coinage, derived from crystal, a transparent quartz gemstone, usually colorless, that can be cut to reflect brilliant light, whose name comes from Ancient Greek κρύσταλλος ...
Alchemical symbols were used to denote chemical elements and compounds, as well as alchemical apparatus and processes, until the 18th century. Although notation was partly standardized, style and symbol varied between alchemists.
A crystal is a form of solid matter whose constituent atoms, ... meaning The Crystal, ... Text is available under the Creative Commons Attribution-ShareAlike 4.0 ...
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Crystal structure is described in terms of the geometry of arrangement of particles in the unit cells. The unit cell is defined as the smallest repeating unit having the full symmetry of the crystal structure. [2]