Lithic tree, a search for natural stereotomy .The lithic tree as a new generation of branched structuresFrom conception to finished product: digital fabrication and architectural techniques of stone prototypeParametrization of formStructural simulation of the lithic tree behaviorWorkshop: stereotomy, new and old practicesPractical experiences in other school of stereotomyThe sexpartite vault in the Architecture School of MadridDidactic experiences about stone: Mecastone.