Chalcedony

//kælˈsɛd.ə.ni// noun

Definitions

Noun
  1. 1
    A form of fine-grained quartz that is nearly transparent or has a milky translucence; it fractures conchoidally. countable, uncountable

    "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.)"

  2. 2
    a milky or greyish translucent to transparent quartz wordnet

Etymology

Borrowed from Latin chalcēdōnius, from Ancient Greek χαλκηδόνιος (khalkēdónios), from Ancient Greek χαλκηδών (khalkēdṓn), cognate to Arabic كَرْكَنْد (karkand).

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