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A genus of perching birds, including the European kingfisher (Alcedo ispida). See Halcyon.

A foul vein, like chalcedony, in some precious stones.

See Chalcedonic.

Of or pertaining to chalcedony.

y of quartz, having usually a whitish color, and a luster nearly like wax. [Written also calcedony.]

An opaque or milk-white chalcedony, a variety of quartz; also, a similar variety of opal.

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.

A variety of quartz or chalcedony, exhibiting opalescent reflections from within, like the eye of a cat. The mane is given to other gems affording like effects, esp. the chrysoberyl.

An apple-green variety of chalcedony, colored by nickel. It has a dull flinty luster, and is sometimes used in jewelry.

it holds to the Monophysitic doctrine which was condemned (a. d. 451) by the council of Chalcedon, and allows its priests to marry. The "pope and patriarch" has jurisdiction over the Abyssinian Church. Since the 7th century the Coptic Church has been so isolated from modifying influences that in many respects it is the…

A variety of chalcedony containing water.

Chalcedony in parallel layers of different shades of color. It is used for making cameos, the figure being cut in one layer with the next as a ground. Onyx marble, a banded variety of marble or calcium carbonate resembling onyx. It is obtained from Mexico.

g gunpowder, in large cubical grains. -- Scotch pebble, varieties of quartz, as agate, chalcedony, etc., obtained from cavities in amygdaloid.

z, of a color between grass green and leek green, which is found associated with common chalcedony. It was much esteemed by the ancients for making engraved ornaments.

ariety of carnelian, of a rich reddish yellow or brownish red color. See the Note under Chalcedony.

A variety of onyx consisting of sard and white chalcedony in alternate layers.