Crystal

Crystal

A crystal or crystalline solid is a solid material whose constituent atoms, molecules, or ions are arranged in an ordered pattern extending in all three spatial dimensions. In addition to their microscopic structure, large crystals are usually identifiable by their macroscopic geometrical shape, consisting of flat faces with specific, characteristic orientations.

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Famous quotes containing the word crystal:

    “I’m headed for a land that’s far away
    Beside the crystal fountains.
    So come with me, we’ll go and see
    The Big Rock Candy Mountains.”
    —Unknown. The Big Rock Candy Mountains (l. 5–8)

    “But the thing that I saw in your face
    No power can disinherit:
    No bomb that ever burst
    Shatters the crystal spirit.”
    —George Orwell (1903–1950)