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Chalcedony (/ k æ l ˈ s ɛ d ə n i / kal-SED-ə-nee or / ˈ k æ l s ə ˌ d oʊ n i / KAL-sə-doh-nee) [2] is a cryptocrystalline form of silica, composed of very fine intergrowths of quartz and moganite. [3]
Chalcedon was an episcopal see at an early date and several Christian martyrs are associated with Chalcedon: The virgin St. Euphemia and her companions in the early 4th century; the cathedral of Chalcedon was consecrated to her. St. Sabel the Persian and his companions. It was the site of various ecclesiastical councils.
Even though Chalcedon reaffirmed the Third Council's condemnation of Nestorius, the Non-Chalcedonians always suspected that the Chalcedonian Definition tended towards Nestorianism. This was in part because of the restoration of a number of bishops deposed at the Second Council of Ephesus, bishops who had previously indicated what appeared to be ...
The use of metal was less common. When the inscription is properly cut into the stone, it is called a titulus or marble; if merely scratched on the stone, the Italian word graffito is used; a painted inscription is called dipinto, and a mosaic inscription—such as those found largely in North Africa, Spain, and the East—are called opus musivum.
Chalcedonian Christianity is a term referring to the branches of Christianity that accept and uphold theological resolutions of the Council of Chalcedon, the fourth ecumenical council, held in AD 451. [1]
The Crucifix, a cross with corpus, a symbol used in the Catholic Church, Lutheranism, the Eastern Orthodox Church, and Anglicanism, in contrast with some other Protestant denominations, Church of the East, and Armenian Apostolic Church, which use only a bare cross Early use of a globus cruciger on a solidus minted by Leontios (r. 695–698); on the obverse, a stepped cross in the shape of an ...
The Greek and Latin names are taken from the river Achates (the modern Dirillo), in Sicily, where this stone was first found (Theophrastus, "De lapid.", 38; Pliny, "Hist. nat.", XXXVII, liv). The stone belongs to the silex family (chalcedony species) and is formed by deposits of siliceous beds in hollows of rocks. This mode of formation results ...
Chrysoprase, chrysophrase or chrysoprasus is a gemstone variety of chalcedony (a cryptocrystalline form of silica) that contains small quantities of nickel.Its color is normally apple-green, but varies from turquoise-like cyan to deep green.