Opal vs Chalcedony - What's the difference?
opal | chalcedony |
(mineralogy) A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity, of the chemical formula Si]]O2· n[[water, H2O.
* {{quote-magazine, date=2012-03
, author=Lee A. Groat
, title=Gemstones
, volume=100, issue=2, page=128
, magazine=(American Scientist)
(biology, genetics, biochemistry) A colloquial name used in molecular biology referring to a particular stop codon sequence, "UGA."
A form of fine-grained quartz that is nearly transparent or has a milky translucence; it fractures conchoidally.
*{{quote-magazine, date=2012-03
, author=Lee A. Groat
, title=Gemstones
, volume=100, issue=2, page=128
, magazine=(American Scientist)
As nouns the difference between opal and chalcedony
is that opal is a mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity, of the chemical formula SiO2·nH2O while chalcedony is a form of fine-grained quartz that is nearly transparent or has a milky translucence; it fractures conchoidally.As a proper noun Opal
is {{given name|female|from=English}} from the precious stone, invented in the nineteenth century.opal
English
(wikipedia opal)Noun
(en noun)citation, passage=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.)}}
Derived terms
* fire opal * wood opal * opaline * opalesceReferences
Anagrams
* ----chalcedony
English
Noun
(chalcedonies)citation, passage=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.)}}