Websters Dictionary 1828
This online edition has been carefully prepared in a special format. All words, definitions, and examples have been preserved, but the explanations of word origins have been left out to make the data easier to use in a digital format. We have also removed Webster's long technical introduction for the same reason.
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Chalcedony
CHALCEDONY, noun A subspecies of quartz, a mineral called also white agate, resembling milk diluted with water, and more or less clouded or opake, with veins, circles and spots. It is used in jewelry.
The varieties of chalcedony are common chalcedony heliotrope, chrysoprase, plasma, onyx, sard and sardonyx.
First Occurrence in the Bible(KJV): Revelation 21:19