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/kælˈsɛd.ə.ni/ · noun
A form of fine-grained quartz that is nearly transparent or has a milky translucence; it fractures conchoidally..
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.)
Use chalcedony when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Chalcedony means A form of fine-grained quartz that is nearly transparent or has a milky translucence; it fractures conchoidally..
Common synonyms include chalcedonite, calcedony.
The opposite depends on the specific sense.
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.)
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