Kimberlite has a gentle energy that helps one to reach deeper states of meditation and helps one to keep their intention/focus when practicing visualization. It is also used to facilitate astral travel.
Kimberlite comes from South Africa and was found in a diamond mine - it is actually the matrix, the material , that the diamonds formed around and within.
It is said to have strong protective energies and brings with it a mystical and high energy vibration.
These, like all our crystals, have been retuned with vibrational sound and were placed under a copper pyramid to be bathed in moonlight.