Garnets, worked in the cloisonné technique, featured prominently in the luxury jewelry of the Franks. Jewelers would solder small compartments arranged in geometric patterns onto the surface of a metal disk. In those cells, or cloisons, they would place a textured piece of gold foil, which would show through the thin translucent garnet that would then be set on top.
Found in Rosay, northern France; J. Pierpont Morgan, London and New York (until 1913); Estate of J. Pierpont Morgan(1913–1917)
Ricci, Seymour de. Catalogue of a Collection of Gallo-Roman Antiquities Belonging to J. Pierpont Morgan. Paris: C. Berger, 1911. no. 150, p. 26, pl. VIII.
Sutton, Denys, ed. Treasures from the Metropolitan Museum of Art: French Art from the Middle Ages to the Twentieth Century. Yokohama: Yokohama Museum of Art, 1989. no. 2, p. 61, ill.
Brown, Katharine R. Migration Art, A.D. 300-800. New York: The Metropolitan Museum of Art, 1995. pp. 12, 29, 51, fig. 5.
Brown, Katharine R., Dafydd Kidd, and Charles T. Little, ed. From Attila to Charlemagne: Arts of the Early Medieval Period in the Metropolitan Museum of Art. New York and New Haven: The Metropolitan Museum of Art, 2000. p. 20, 347, fig. 3.9.