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Bible Dictionaries
Opal

Webster's Dictionary

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(n.) A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity.

Bibliography Information
Webster, Noah. Entry for 'Opal'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​o/opal.html. 1828.
 
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