CHALCEDONY

A precious stone, resembling the agate; of various colors, but often a light brown or blue, Re 21:19. It is found in most parts of the world, though named after Chalcedon in Bithynia opposite Constantinople; and is much used as a material for cups, vases, and other articles of taste. Carnelian is said to be one of its varieties.

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Chalcedony. Chalcedony
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.)

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CHALCEDONY. → A precious stone Re 21:19

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Chal‐ced″o‐ny (kăl‐sĕd″ō̍‐ny̆ or kăl″sē̍‐dō̍‐ny̆; 277), n.; pl. Chalcedonies (–nĭz). [[ L. chalcedonius, fr. Gr. Χαλκηδών Chalcedon, a town in Asia Minor, opposite to Byzantium: cf. calcédoine, 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.] ☞ 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.