This alabaster panel depicts the head of St John the Baptist surrounded by saints. Alabaster, a fine grained form of gypsum, is a smooth marble-like stone that became popular during the late Middle Ages for the carving of religious sculpture. Softer than marble, it was much easier to carve and also considerably cheaper. England was an important European centre of alabaster production, with quarries outside Nottingham, York, Burton-on-Trent and London. From about 1380s, alabasters - both single devotional images and reliefs for altarpieces - were exported in considerable numbers to the continent where they were to survive, whereas in England such images were destroyed during the Reformation.