Kimberlite is an unusual volcanic rock which acts as a host for Diamonds. Diamonds need pressures in excess of 50,000 atmospheres to form, and pressures this intense only exist at a depth of more than 90 miles (150 km) below the surface of the Earth. Commercially mined Diamonds are taken from Kimberlite deposits that were brought close to the Earth's surface by ancient volcanic eruptions. No Kimberlite volcanoes have erupted for more than 60 million years, and this is a good thing. The speed needed to bring Diamonds to the surface of the Earth intact from such a depth is more than the speed of sound, so a Kimberlite volcanic eruption would be a truly devastating event.

Kimberlite is associated with the power of elemental Fire and is used magically to symbolize Fire's ability to purify and transform other substances. It also symbolizes the spiritual evolution of the human soul and is a very useful stone for anyone who is striving to grow spiritually or improve their awareness of the sacred nature of life. Kimberlite is said to help you 'walk your talk', create a closer relationship with your Higher Power and maintain a committment to the spiritual path you follow.