Theoretical introduction to the main marbles and their physical characteristics. Importance of the marble industry in Belgium. Technology and typology. Restoration and conservation of marbles. Pathologies and main causes of marble deterioration. Quarry visits. Application in the workshop (restoration of a fireplace mantel): methods and intervention techniques for conservation and restoration. Consolidation. Repairs through doweling, leveling, and grafting. Use of resins, marble powder, and pigments. Surface treatments, polishing, patinas…