- http://www.eia.doe.gov/kids/energyfacts/saving/recycling/solidwaste/metals.
html - http://www.famsf.org/deyoung/about/subpage.asp?subpagekey=46
- http://socrates.berkeley.edu/~eps2/wisc/Lect2.html
- http://howtobuyagemstone.gia.edu/00_enter.html
- http://www.sdnhm.org/kids/minerals/games/search/index.html
- http://www.eia.doe.gov/kids/energyfacts/saving/recycling/solidwaste/metals.
html - http://www.mnh.si.edu/exhibits/si-gems/index.htmln
- http://en.wikipedia.org/
Vocabulary
gemstone Any material that is cut and polished to use in jewelry.
ore A mineral deposit that contains enough minerals to be mined for profit.
Points to Consider
- Are all mineral deposits ores?
- An open-pit diamond mine may one day be turned into an underground mine. Why
would this happen? - Diamonds are not necessarily the rarest gem. Why do people value diamonds more
than most other gems?
Image Sources
(1) USGS,USDA.
http://en.wikipedia.org/wiki/File:Highball_Glass_(Tumbler).svg
http://education.usgs.gov/schoolyard/RockDescription.html
http://en.wikipedia.org/wiki/File:ImgSalt.jpg
http://commons.wikimedia.org/wiki/File:
USDA_Mineral_Quartz_Crystal_93c3951.jpg. Public Domain,CC-BY-SA,Rebecca
Calhoun.(2) http://flickr.com/photos/zengame/48497087/. CC-BY.(3) Ruby is cut and polished to make the gemstone sparkle.. Public Domain.(4) http://commons.wikimedia.org/wiki/Image:Hexahedron.jpg,http:
//commons.wikimedia.org/wiki/Image:Rhombohedron.png,http: