All gems have energetic properties that support and benefit the planet.
Throughout history science has used quartz crystal as an energy conductor, amplifier, and oscillator of crystal radios, quartz watches, and pressure gauges. Diamonds have been used as a conductor to break up kidney stones, and Jade is used to emit negative ions, for alkalizing.
The principle of gem therapy is sympathetic resonance, which states that if there are two similar objects and one of them is vibrating, the other will begin to vibrate as well, even if they are not touching.
Just as each plant or herb has specific chemical vibrational properties, gems also contain specific properties and frequencies to support the human energetic fields and psyche.