# chemically inert molecule with piezoelectric properties

For a research project, I'm looking into existing chemical molecules that have the following properties:

• It is mostly chemically inert, safe for animals and children
• It exhibits piezoelectricity - production of high electric oscillating potentials under pressure
• paramagnetic moment a plus, but not required

Are there known candidates for this?

• What's wrong about quartz ! – blackSmith Aug 4 '13 at 6:56

The ur-piezoelectric crystal is quartz. Being composed of $\ce{SiO2}$, it more or less epitomizes chemical/biological inertness. It has the additional advantage of being comparatively cheap and common. There are a number of other natural minerals which are piezoelectric (e.g., various perovskites). Most of those minerals are, as far as I know, relatively unreactive and non-toxic. Naturally, if toxicity is a concern, avoid the common lead-based compounds.