Quote ... in part ...

The word "piezo" is derived from the Greek word for pressure. In 1880 Jacques and Pierre Curie discovered that pressure generates electrical charges in a number of crystals such as quartz and tourmaline; they called this phenomenon the "piezoelectric effect". Later they noticed that electrical fields can deform piezoelectric materials. This effect is called the "inverse piezoelectric effect".

Fundamentals of Piezo Technology

Quartz and Tourmaline = crystal Earth elements ...

From that same link ... Quote ...in part ...:

The industrial breakthrough came with Piezoelectric Ceramics, when scientists discovered that barium titanate adopts piezoelectric characteristics on a useful scale when an electric field is applied.

Rickie