Folklore of Chrysolampis and Carbuncles

In his commentary on Marbodus, Alardus of Amsterdam relates the history of a wonderful luminous stone, a "chrysolampis," which, with many other precious stones, was set in a marvellous golden tablet dedicated to St. Adelbert, apostle of the Frisians and patron of the town of Egmund (d. 720-730), by Hildegard, wife of Theodoric, Count of Holland. The gift was made to the Abbey of Egmund, where the saint's body reposed. Alardus tells us that the "chrysolampis" shone so brightly that when the monks were called to the chapel in the night-time, they could read the Hours without any other light. This wonderful stone was stolen by one of the monks, whom Alardus terms "the most rapacious creature who ever went on two legs"; but, fearing to keep so valuable a gem with him, he cast it into the sea and it was never recovered. (The abbey to which Hildegard gave the tablet was probably that built by Theodoric II and destroyed by the Reformers in 1572. The first building was of wood and was erected by Theodoric I in 923 or 924; this was ravaged by the Frisians not many years later.)

Strange tales were told of a luminous "carbuncle" on the shrine of St. Elizabeth (d. 1231) at Marburg. This stone was set above the statuette of the Virgin, and it was said to emit fiery rays at night. However, Creuzer informs us that it was only a very brilliant rock crystal of a yellowish-white hue. The shrine was an elaborate work of art in silver gilt, and was literally covered with precious stones to the number of 824, besides two large pearls and a great many smaller ones. All these gems were stripped from their settings when the shrine was taken from Marburg to Cassel in 1810. (Creuzer, "Antik geschnittene Steine vom Grabmahl der heiligen Elizabeth," Leipsic and Darmstadt, 1834.)