chalcedony
English
editEtymology
editBorrowed from Latin chalcēdōnius, from Ancient Greek χαλχηδόνιος (khalkhēdónios), cognate to Arabic كَرْكَنْد (karkand).
Pronunciation
editNoun
editchalcedony (countable and uncountable, plural chalcedonies)
- A form of fine-grained quartz that is nearly transparent or has a milky translucence; it fractures conchoidally.
- 2012 March, Lee A. Groat, “Gemstones”, in American Scientist[1], volume 100, number 2, archived from the original on 14 June 2012, page 128:
- Although there are dozens of different types of gems, among the best known and most important are […] . (Common gem materials not addressed in this article include amber, amethyst, chalcedony, garnet, lazurite, malachite, opals, peridot, rhodonite, spinel, tourmaline, turquoise and zircon.)
Synonyms
editDerived terms
editRelated terms
editTranslations
editform of fine-grained quartz
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See also
edit- (noun: types of minerals) agate, chert, flint, moganite
- (adjective) conchoidal
- (adverb) conchoidally
- (noun) break, fracture, flake, shatter
- (verb) knapp, break, fracture, flake, shatter
Further reading
edit- David Barthelmy (1997–2024) “Chalcedony”, in Webmineral Mineralogy Database.
- “chalcedony”, in Mindat.org[2], Hudson Institute of Mineralogy, 2000–2024.
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- en:Gems