Assertion: topaz | /r/HasProperty | mined
Facets:
Source sentences:
text: The mines in Queretaro are famous for the world-class opal, but topaz is also mined here.
text: Once the topaz has been mined, it may be treated, polished with diamond or aluminium oxide, or cut.
text: The most common venues from where Topaz is mined are Germany, The Czech Republic, Italy, Norway, Sweden, Pakistan, Afghanistan, Japan and Brazil, at specific sites of Texas and Utah as well as in Mexico.