Chalcedony

Chal*ced"o*ny

(kl*sd"*n or kl"s*d*n; 277), n.;
pl. Chalcedonies (-nz).
[ L. chalcedonius, fr. Gr. CHalkhdw`n Chalcedon, a town in Asia Minor, opposite to Byzantium: cf. calcdoine, 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.]

[1913 Webster]

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.
[1913 Webster]

Chal`chi*huitl"

(chl`ch*wtl"), n. (Min.) The Mexican name for turquoise. See Turquoise.
[1913 Webster]

 

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Sun 16th December 2018