Large Quartz Point

Quartz crystal is valued for its piezoelectric and pyroelectric properties, by which it can transform mechanical pressure or heat into electromagnetic energy, and vice versa. Its ability to focus, amplify, store and transform energy is used throughout the technology world in ultrasound devices, watches, microphones, radio transmitters and receivers, memory chips in computers and other electronic circuitry. 
46g
2.5inches tall
$18.00 plus $3.50 shipping (US)