Omnipresent in the construction of traditional dwellings in the towns and villages of Auvergne, lava stone is believed to be a ‘warm’ stone with the power to retain and diffuse heat in a gentle and balanced way. Its dark colour and volcanic texture effectively concentrate the heat of the sun during the day and redistribute it inside the buildings. As for the natural magnetism of these stones born from the earth’s telluric energy, it is said to positively influence the inhabitants.