n. 红玉髓, 光玉髓

[化] 光玉髓; 肉红玉髓

[ noun ]
a translucent red or orange variety of chalcedony
<noun.substance>

Carnelian \Car*nel"ian\, n. [For carnelian; influenced by L.
carneus fleshy, of flesh, because of its flesh red color. See
{Cornellan}.] (Min.)
A variety of chalcedony, of a clear, deep red, flesh red, or
reddish white color. It is moderately hard, capable of a good
polish, and often used for seals.

Chalcedony \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.
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