Back Bay church seeks to restore Tiffany window ← Related Article Visit The Boston Globe Share on Twitter Share on Facebook Comment on this Scroll to top of page Joanne Rathe/Globe Staff Burglars broke into the Church of the Covenant last month, smashing a stained-glass window in the process. Joanne Rathe/Globe Staff Restoring the broken window, far right, will cost as much as $60,000. Joanne Rathe/Globe Staff This close up of part of the stained glass window showed its intricate, graceful design. Joanne Rathe/Globe Staff Roberto Rosa was called in to restore the window. Here, he showed pieces of the smashed glass. Joanne Rathe/Globe Staff Rosa, who has restored stained glass for more than two decades, likened the repair work to assembling a jigsaw puzzle.