About The Word Opal
Learn about the word Opal to help solve your crossword puzzle. Discover Opal definitions and meaning, origins, synonyms, related terms and more at the free Crossword Dictionary.
Opal
| Opal Definition And Meaning |
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What's The Definition Of Opal?
[n] a translucent mineral consisting of hydrated silica of variable color; some varieties are used as gemstones
Synonyms | Synonyms for Opal: Related Terms | Find terms related to Opal: See Also | black opal | fire opal | girasol | harlequin opal | mineral | opaque gem Opal In Webster's Dictionary \O"pal\, n. [L. opalus: cf. Gr. ?, Skr. upala a rock,
stone, precious stone: cf. F. opale.] (Min.)
A mineral consisting, like quartz, of silica, but inferior to
quartz in hardness and specific gravity.
Note: The precious opal presents a peculiar play of colors of
delicate tints, and is highly esteemed as a gem. One
kind, with a varied play of color in a reddish ground,
is called the harlequin opal. The fire opal has colors
like the red and yellow of flame. Common opal has a
milky appearance. Menilite is a brown impure variety,
occurring in concretions at Menilmontant, near Paris.
Other varieties are cacholong, girasol, hyalite, and
geyserite.
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