Here is an excellent idea for using a material which is not commonly used in jewelry! Reloved Designs posted this image, and other along with a commentary on the process on Craftster.org.
I love the dramatic look of these brooches and find it fascinating that they are made out of pistachio shells. What a innovative idea!
You can also find Reloved Design’s work on Etsy. So take a look and see what she does with other materials which are generally destined to be thrown away.