The substance whose crystals can vibrate very fast and at a precise rate is quartz. Quartz is a piezoelectric material, which means that it can convert mechanical energy into electrical energy and vice versa. This property is due to the fact that the crystal lattice of quartz is very regular and symmetrical, allowing the atoms to vibrate in a very precise and synchronized way. This makes quartz an ideal material for use in electronic devices such as watches, clocks, and radios.