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A '''natural gemstone''' is a [[mineral]], stone, or organic matter that can be cut and polished or otherwise treated for use as [[jewelry]] or other ornament.<ref>USGS</ref>
A '''natural gemstone''' is a [[mineral]], stone, or organic matter that can be cut and polished or otherwise treated for use as [[jewelry]] or other ornament.<ref>http://pubs.usgs.gov/gip/gemstones/terms.html</ref>
==References==
==References==