Chalcedony

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  • noun. A translucent to transparent milky or grayish quartz with distinctive microscopic crystals arranged in slender fibers in parallel bands.
  • The Century Dictionary and Cyclopedia
  • noun. A cryptocrystalline variety of quartz, resembling in color milk diluted with water, and more or less clouded or opaque with veins, circles, or spots.
  • the GNU version of the Collaborative International Dictionary of English
  • noun. A cryptocrystalline, translucent variety of quartz, having usually a whitish color, and a luster nearly like wax.
  • Wiktionary, Creative Commons Attribution/Share-Alike License
  • noun. A form of fine-grained quartz that is nearly transparent or has a milky translucence; it fractures conchoidally.
  • WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
  • noun. a milky or greyish translucent to transparent quartz