The word 'Harmonisers' is a general term, used for two stone pieces of identical shape but different in compositions, used together in unison. Harmonisers can be made from many different materials (eg: Seraphinite, Charoite, Nephrite, Quartz etc..), used in collaboration with Shungite for different effects relevant to the specific qualities of the different stones used. Shungite Harmoniser Cylinders and Egg Shaped Harmonisers are used to balance chakras, energise cells and restore our own bio-fields. A person can hold a harmoniser in each hand, and working on the princple of a 'difference in potential' between the stones, a subtle resonance flows through the body energising and rebalancing. They can also be used to neutralise our environment and protect against EMF.