The use of crystals for healing and magic is an aboriginal practice.  Their power has been long recognised, by prehistoric civilisations.  Ancient Priestesses, Healers and, shamans developed an in depth understanding of the healing and magical properties of crystals.  Because of them, we know today that crystals vibrate at the same pitch as humans. In fact, some African cultures, assert that human beings and rock minerals are to be grouped in the same kingdom while non human animals are grouped in another.  As Earth Beings we are able to connect with the elements around us. The resonance between the stone and the human create a type of alchemy that can shift the vibrational field around the individual assisting in spiritual transformation and a change in ones magnetic field.  The individual that carries crystals will soon begin to notice a change in their thoughts, behavior and, environment.  The home that is protected by a crystal grid will benefit from increased positive energy and be shielded to with psychic protection.