Tiffany Glass and Decorating Company was also responsible for the creation of the baptistry’s semi-dome. Composed of irregularly faceted glass slags referred to as “jewel” glass in the Tiffany lexicon, the dome suffuses this special precinct of the church with brilliant and sparkling light. At the apex of the design is a dove representing the Holy Spirit; rising from the waters of the font under this image symbolizes God’s claiming the newly baptized as his beloved child in the same way that Jesus was publicly claimed by God as His beloved Son on whom His favor rests (Mt. 3:17).