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A great chart
explaining the different types of meteorites and listing their
rarity.
Click Here
Homepage for International Colored Gemstone Association. A good site
packed with gemstone information including a gemstone library.
Click Here
A listing of all states official fossil and official gemstone.
Click Here
The paleontology homepage of the US Geologic Survey.
Click Here
A great site with comprehensive seashell galleries and many articles
with archives to past articles.
Click Here
A very through site. The link goes to quartz crystal information but from
there you can find out just about everything having to do with any
mineral or gemstone.
Click Here
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