chalcedony

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English[edit]

Etymology[edit]

Borrowed from Latin chalcēdōnius, probably derived from the name of the town Chalcedon in Asia Minor.

Pronunciation[edit]

  • IPA(key): /kælˈsɛdəni/
  • (file)

Noun[edit]

English Wikipedia has an article on:
Wikipedia
A cut and polished chalcedony geode.

chalcedony (countable and uncountable, plural chalcedonies)

  1. A form of fine-grained quartz that is nearly transparent or has a milky translucence; it fractures conchoidally.
    • 2012 March 1, Lee A. Groat, “Gemstones”, in American Scientist[1], volume 100, number 2, page 128:
      Although there are dozens of different types of gems, among the best known and most important are […] . (Common gem materials not addressed in this article include amber, amethyst, chalcedony, garnet, lazurite, malachite, opals, peridot, rhodonite, spinel, tourmaline, turquoise and zircon.)

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