GM1013 - Holy Spirit - RoundelSize: 6. 5" roundel Design: Louis C. Tiffany, Tiffany Studios Louis Comfort Tiffany's life long study of light culminated in this powerful window he entitled the Holy Spirit Window, completed about 1895. The window, depicting a dove descending among the folds of brilliant sunlight, is carefully reproduced by Glassmasters. In the original, depth is achieved through the use of up to three layers of glass in places, and the border sparkles with sapphire