Nature is the mother of Art:

Caddis fly larvae usually form their protective sheaths by spinning silk with sand, minerals, plant particles, and bits of bone they find in their aquatic environments.

French artist Hubert Duprat collects the larvae, carefully strips their shells, and then puts them in aquaria filled with pearls, rubies, gold, and diamonds. The larvae then make new coverings out of these materials, creating highly original jewelry in the process.

Watch this video to see the larvae in action:

[quicktime width="430" height="323"]http://www.cabinetmagazine.org/issues/25/assets/movies/duprat.mov[/quicktime]
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