In recent years, funding for the conservation of cultural heritage has become increasingly difficult to obtain, and this trend shows no sign of changing significantly in the foreseeable future. The twelfth triennial meeting of the International Committee for the Conservation of Mosaics, held in Sardinia in October 2014, focused on the theme of cost, broadly considered, relating specifically to the preservation and presentation of the world’s mosaic heritage. This handsome, abundantly illustrated volume provides a comprehensive record of the conference. The volume’s sixty-seven papers and posters, comprising contributions from more than one hundred leading experts in the field, reflect the conference’s principal themes: cost, methods of survey and documentation, conservation and management, education and training, backing materials and techniques, presentation and display, and case studies. Papers are presented either in English, French, or Italian; there are abstracts in English and either French or Italian for all entries. The volume will be of interest to conservators, site managers, and others responsible for conserving the mosaic heritage, especially in these challenging times.