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Pronunciation:  kal'sednee

WordNet Dictionary
[n]  a milky or grayish translucent to transparent quartz

CHALCEDONY is a 10 letter word that starts with C.


 Synonyms: calcedony
 See Also: agate, bloodstone, carnelian, chrysoprase, cornelian, heliotrope, onyx, plasma, quartz, sard, sardine, sardius, transparent gem



Webster's 1913 Dictionary
\Chal*ced"o*ny\ (k[a^]l*s[e^]d"[-o]*n[y^] or
k[a^]l"s[-e]*d[-o]*n[y^]; 277), n.; pl. {Chalcedonies}
(-n[i^]z). [ L. chalcedonius, fr. Gr. CHalkhdw`n Chalcedon, a
town in Asia Minor, opposite to Byzantium: cf. calc['e]doine,
OE. calcidoine, casidoyne. Cf. {Cassidony}.] (Min.)
A cryptocrystalline, translucent variety of quartz, having
usually a whitish color, and a luster nearly like wax.
[Written also {calcedony}.]

Note: When chalcedony is variegated with with spots or
      figures, or arranged in differently colored layers, it
      is called {agate}; and if by reason of the thickness,
      color, and arrangement of the layers it is suitable for
      being carved into cameos, it is called {onyx}.
      {Chrysoprase} is green chalcedony; {carnelian}, a flesh
      red, and {sard}, a brownish red variety.

Easton Bible Dictionary

Mentioned only in Rev. 21:19, as one of the precious stones in the foundation of the New Jerusalem. The name of this stone is derived from Chalcedon, where it is said to have been first discovered. In modern mineralogy this is the name of an agate-like quartz of a bluish colour. Pliny so names the Indian ruby. The mineral intended in Revelation is probably the Hebrew _nophekh_, translated "emerald" (Ex. 28:18; 39:11; Ezek. 27:16; 28:13). It is rendered "anthrax" in the LXX., and "carbunculus" in the Vulgate. (See CARBUNCLE.)

 Definition: a semi-translucent silicate (quartz) rock with a wax-like luster and a great range of colors, used as raw material for the manufacture of chipped stone artifacts. Commonly called agate.