The book investigates the contribution of glass finds to understanding the nature of the transition from Byzantine to Islamic rule in Syria-Palestine, by analysing numerous glass assemblages from Jerusalem and its environs. This original synthesis explores the nature of numerous types of glass objects, and their distinct distribution in various types of sites. Furthermore, the identification of trends of continuity and change in the fabrics, technologies, typologies and styles of the glass finds throughout this turbulent period, illuminates the nature of the processes undergone by the various communities in the Jerusalem area. The monograph comprises a newly established, comprehensive, up-to-date typo-chronology, based on hundreds of glass wares of the Byzantine and Early Islamic periods from scores of excavations, in and around Jerusalem and in neighbouring regions. Additionally, a holistic study of lighting devices, glass lamps and windowpanes, includes a novel assessment of Christian, Muslim and Jewish written sources regarding lighting in religious buildings in Jerusalem in the relevant periods.