Gemmail (French, plural gemmaux) describes a type of stained glass art developed during the 1930s by French painter Jean Crotti. Translated from French, the word literally means "enamel gem".^[1] It differs from traditional stained glass techniques in that the individual pieces of colored glass are not joined by lead came, but overlapped and glued together with a clear substance. Pablo Picasso is said to have hailed gemmail as a new art form. Inside the Basilica of St. Pius X in Lourdes, Bernadette Soubirous's "Way of Light", based on sketches by René Margotton, depicts the eighteen apparitions together with scenes from her life.^[2]