Through a Glass Brightly: Islamic Glass Inlays in the Convent of Santa Fe in Toledo (Spain)
DOI:
https://doi.org/10.52825/glass-europe.v3i.2657Keywords:
LA-ICP-MS, Plant-Ash Glass, Copper, Turquoise, Islamic Spain, Manganese, Flat Glass, Crown GlassAbstract
The Islamic era left a lasting legacy in the visual and material culture of the Iberian Peninsula. This phenomenon is particularly striking in a rare find of architectural fragments of an arcade with horseshoe-shaped arches in the convent of Santa Fe in Toledo (Spain). Different coloured glass-inlays (turquoise, purple, colourless) were embedded in the iconographic bas-relief made of plaster, an artistic technique that is unparalleled. This study explores the dynamics of glass supply and workshop practices in 11th-century Spain through the chemical analysis of 46 specimens of these glass inlays. Laser ablation inductively coupled plasma mass spectrometry revealed a compositional resemblance but no identity with Iberian soda-rich plant ash glass, pointing to a regional or even local production. The glass assemblage as a whole proved very homogeneous and we were able to identify possible batches in which the individual pieces were probably cut from the same sheet of glass. Despite using the same base glass, the copper-turquoise coloured fragments showed different colouring techniques and combinations of colouring elements. Our findings shed light on the organisation of secondary glass working and material procurement for artistic purposes in Islamic Spain.
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F. Monzón Moya, "El antiguo convento de Santa Fe: la desmembración del aula regula islámica y su transformación en un cenobio cristiano," in La ciudad medieval: de la casa principal al palacio urbano: actas del III Curso de Historia y Urbanismo Medieval organ-izado por la Universidad de Castilla-La Mancha, 2011, pp. 241-276.
M. A. Makki and F. Corriente, Crónica de los emires Alhakam I y Abdarrahman II entre los años 796 y 847: (Almuqtabis II-1). Zaragoza: Instituto de Estudios Islámicos y del Oriente Próximo, 2001.
J. De Juan Ares, "La ciudad de Vascos y el fenómeno urbano en el occidente tole-dano," in Al-Ándalus: un país de Ciudades, Toledo: Diputación de Toledo, 2008, pp. 297-303.
M. J. Viguera Molins, "La taifa de Toledo," in Actas del Congreso Internacional. "Entre el Califato y la Taifa. Mil años del Cristo de la Luz", Toledo: Asociación de Amigos del To-ledo Islámico,, 2000, pp. 53-65.
S. Calvo Capilla, "La capilla de Belén del convento de Santa Fe de Toledo:¿ Un oratorio musulmán?," Tulaytula: Revista de la Asociación de Amigos del Toledo Islámico, pp. 31-73, 2004. https://dialnet.unirioja.es/servlet/articulo?codigo=2482059
C. Delgado Valero, "Arqueología islámica de la ciudad de Toledo," in Actas del primer congreso de arqueología de la provincia de Toledo, ed Toledo: Diputación Provincial de Toledo, 1990, pp. 407-431.
F. Monzón Moya, "Las estancias palaciegas de época islámica registradas en el ex convento de Santa Fe de Toledo," Bolskan: Revista de arqueología del Instituto de Es-tudios Altoaragoneses, vol. 21, pp. 45-55, 2004. https://dialnet.unirioja.es/servlet/articulo?codigo=2011696
V. Rabasco García, I. d. E. Medievales, and U. d. L. Á. d. Publicaciones, La cultura ar-tística del reino andalusí de Toledo: promoción e innovación en la corte de los Banu Du-l-Nun. León: Publicaciones Universidad de León, 2023.
M. González Pascual, "La puesta en valor de un conjunto de fragmentos de arco deco-rados con yeserías islámicas hallado en el antiguo convento de Santa Fe de Toledo," In-formes y Trabajos, pp. 195-226, 2014.
P. Cressier, S. Gilotte, and M. Rammah, "The Fatimid and Zirid wall "stuccoes" of Ṣabra al-Manṣūriyya," in Stucco in the Islamic World, Studies of architectural Orna-ment from Spain to India, R. P. McClary, Ed., Edinburgh: Edinburgh University Press, 2025.
C. Ewert, Hallazgos islámicos en Balaguer y la Aljafería de Zaragoza vol. 97. Madrid: Ministerio de Educación, 1979.
B. Cabañero Subiza, El Palacio de la Aljafería de Zaragoza entre la tradición omeya y la renovación ‘abbasí y fatimí: Institución' Fernando el Católico", 2012.
J. Navarro Palazón and P. Jiménez Castillo, "Casas y palacios de al-Andalus," in Casas y palacios de al-Andalus. Siglos XII-XIII, J. Navarro Palazón, Ed., ed Barcelona-Granada: Legado Andalusí, 1995, pp. 17-32.
A. Galán, "Después de los Marfiles Califales Cordobeses, Marfiles Hispano-Árabes, siglos XI y XII. Periodos Taifa Y Africanos," Arte, arqueología e historia, vol. 15, pp. 55-78, 2008.
R. M. Harrison, Excavations at Saraçhane in Istanbul, Vol. 1: The Excavations, Struc-tures, Architectural Decoration, Small Finds, Coins, Bones, And Molluscs vol. I. Prince-ton, New Jersey: Princeton University Press, 1986.
M. Ritter, "A glass room in Abbasid Palaces, reference to Solomon and a 'unique' bottle in Teheran," Zeitschrift für Orient-Archäologie, vol. 12, pp. 226-255, 2019.
N. Schibille, A. Meek, M. T. Wypyski, J. Kröger, M. Rosser-Owen, and R. W. Haddon, "The glass walls of Samarra (Iraq): Ninth-century Abbasid glass production and im-ports," PloS One, vol. 13, p. e0201749, 2018. https://doi.org/10.1371/journal.pone.0201749
D. Foy, Le verre de Sabra al-Mansuriya - Kairouan, Tunisie - milieu Xe-milieu XIe siè-cle: Production et consommation: vaisselle - contenants - vitrages. Oxford: Archaeo-press Archaeology, 2020.
M. J. Rubiera, La arquitectura en la literatura árabe. Madrid: Editora Nacional, 1981.
M. Gómez-Moreno, El arte árabe español hasta los almohades. Arte mozárabe. Madrid: Editorial Plus, 1951.
J. De Juan Ares and N. Schibille, "El vidrio en la taifa de Toledo: reflexiones a partir de Ciudad de Vascos y el convento de Santa Fe," in Ṭawā‘if. Historia y Arqueología de los reinos taifas, B. Sarr, Ed., ed Granada: Alhulia, 2018, pp. 473-487.
P. Jiménez Castillo, "Talleres, técnicas y producciones del vidrio en al-Andalus," in El vidrio islámico en al-Andalus, P. Cressier, Ed., La Granja de San Ildefonso: Real Fábri-ca de Cristales de La Granja, 2006, pp. 51-70.
J. De Juan Ares and N. Schibille, "Glass import and production in Hispania during the early medieval period: The glass from Ciudad de Vascos (Toledo)," PLoS One, vol. 12, p. e0182129, 2017. https://doi.org/10.1371/journal.pone.0182129
L. Ruiz Molina, "Museo Arqueológico Municipal “Cayetano de Mergelina”. 130 años de actividad arqueológica en Yecla (Murcia)," ed: Concejalía de Cultura Excmo. Ayun-tamiento de Yecla. Yecla, 2000.
J. De Juan Ares, Y. Cáceres Gutiérrez, M. Moreno Almenara, and N. Schibille, "Com-position and origins of decorated glass from Umayyad Cordoba (Spain)," Heritage Sci-ence, vol. 9, 2021. https://doi.org/10.1186/s40494-021-00505-4
N. Schibille, J. D. J. Ares, M. T. C. García, and C. Guerrot, "Ex novo development of lead glassmaking in early Umayyad Spain," Proceedings of the National Academy of Sciences, vol. 117, pp. 16243-16249, 2020. https://doi.org/10.1073/pnas.2003440117
G. F. Bass, B. Lledo, S. Matthews, and R. H. Brill, Serçe Limani, Vol 2: The Glass of an Eleventh-Century Shipwreck. College Station: Texas A&M University Press, 2009.
O. R. Constable, Trade and traders in Muslim Spain: the commercial realignment of the Iberian peninsula, 900-1500. Cambridge: Cambridge University Press, 1996.
R. Azuar Ruiz, "Al-Andalus y el comercio mediterráneo del siglo XI, según la dispersión y distribución de las producciones cerámicas," Codex aquilarensis: Cuadernos de in-vestigación del Monasterio de Santa María la Real, vol. 13, pp. 51-78, 1998.
R. Azuar Ruiz, Los bronces islámicos de Denia. Alicante: MARQ, 2012.
B. Gratuze, "Glass characterization using laser ablation-inductively coupled plasma-mass spectrometry methods," in Recent Advances in Laser Ablation ICP-MS for Ar-chaeology, Series: Natural Science in Archaeology, L. Dussubieux, M. Golitko, and B. Gratuze, Eds., Berlin, Heidelberg: Springer, 2016, pp. 179-196.
R. H. Brill, Chemical Analyses of Early Glasses vol. 2. Corning, New York: The Corning Museum of Glass, 1999.
Q.-Q. Lü, H. Basafa, and J. Henderson, "Connected in diversity: Isotopic analysis re-fines provenance for Islamic plant-ash glass from the eastern Silk Roads," iScience, vol. 26, 2023. https://doi.org/10.1016/j.isci.2023.108450
N. Schibille, Islamic Glass in the Making: Chronological and Geographical Dimensions. Leuven: Leuven University Press, 2022.
B. S. Kamber, A. Greig, and K. D. Collerson, "A new estimate for the composition of weathered young upper continental crust from alluvial sediments, Queensland, Austral-ia," Geochimica et Cosmochimica Acta, vol. 69, pp. 1041-1058, 2005. https://doi.org/10.1016/j.gca.2004.08.020
K. H. Wedepohl, K. Simon, and A. Kronz, "The chemical composition including the Rare Earth Elements of the three major glass types of Europe and the Orient used in late an-tiquity and the Middle Ages," Chemie Der Erde-Geochemistry, vol. 71, pp. 289-296, 2011. https://doi.org/10.1016/j.chemer.2011.04.001
I. C. Freestone, G. H. Barfod, C. Chen, K. A. Larson, and Y. Gorin-Rosen, "Glass pro-duction at Jalame, Israel: Process, composition and relationship to Roman glass in Eu-rope," Journal of Archaeological Science: Reports, vol. 51, p. 104179, 2023. https://doi.org/10.1016/j.jasrep.2023.104179
N. Schibille, B. Gratuze, E. Ollivier, and É. Blondeau, "Chronology of early Islamic glass compositions from Egypt," Journal of Archaeological Science, vol. 104, pp. 10-18, 2019. https://doi.org/10.1016/j.jas.2019.02.001
M. Phelps, I.C. Freestone, Y. Gorin-Rosen, and B. Gratuze, "Natron glass production and supply in the late antique and early medieval Near East: The effect of the Byzantine-Islamic transition," Journal of Archaeological Science, vol. 75, pp. 57-71, 2016. https://doi.org/10.1016/j.jas.2016.08.006
N. Schibille and F. Colangeli, "Transformations of the Mediterranean glass supply in me-dieval Mazara del Vallo (Sicily)," in Mazara/Māzar: nel ventre della città medievale (secoli VII-XV). Edizione critica degli scavi (1997) in via Tenente Gaspare Romano, A.Molinari, and A. Meo, Eds., All’Insegna del Giglio, Biblioteca di Archeologia Medievale 32, Sesto Fiorentino, 2021, pp 487-500.
Y. Barkoudah and J. Henderson, "Plant ashes from Syria and the manufacture of an-cient glass: ethnographic and scientific aspects," Journal of Glass Studies, vol. 48, pp. 297-321, 2006.
A. Van Ham-Meert, P. Claeys, S. Jasim, B. Overlaet, E. Yousif, and P. Degryse, "Plant ash glass from first century CE Dibba, UAE," Archaeological and Anthropological Sci-ences, vol. 11, pp. 1431-1441, 2019. https://doi.org/10.1007/s12520-018-0611-0
L. Cormier and C. Noirot, "Understanding the Influence of Copper on the Color of Glasses and Glazes: Copper Environment and Redox," Glass Europe, vol. 2, pp. 55-82, 2024. https://doi.org/10.52825/glass-europe.v2i.1274
A.-I. Bidegaray, S. Godet, M. Bogaerts, P. Cosyns, K. Nys, H. Terryn, et al., "To be purple or not to be purple? How different production parameters influence colour and redox in manganese containing glass," Journal of Archaeological Science: Reports, vol. 27, p. 101975, 2019. https://doi.org/10.1016/j.jasrep.2019.101975
D. Möncke, M. Papageorgiou, A. Winterstein-Beckmann, and N. Zacharias, "Roman glasses coloured by dissolved transition metal ions: redox-reactions, optical spectrosco-py and ligand field theory," Journal of Archaeological Science, vol. 46, pp. 23-36, 2014. https://doi.org/10.1016/j.jas.2014.03.007
T. Palomar, C. Grazia, I. P. Cardoso, M. Vilarigues, C. Miliani, and A. Romani, "Analysis of chromophores in stained-glass windows using Visible Hyperspectral Imaging in-situ," Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, vol. 223, p. 117378, 2019. https://doi.org/10.1016/j.saa.2019.117378
Z. Y. Yao, D. Möncke, E. I. Kamitsos, P. Houizot, F. Célarié, T. Rouxel, et al., "Struc-ture and mechanical properties of copper–lead and copper–zinc borate glasses," Jour-nal of Non-Crystalline Solids, vol. 435, pp. 55-68, 2016. https://doi.org/10.1016/j.jnoncrysol.2015.12.005
J. De Juan Ares, Y. Cáceres Gutiérrez, M. Moreno Almenara, and N. Schibille, "Com-position and origins of decorated glass from Umayyad Cordoba (Spain)," Heritage Sci-ence, vol. 9, 2021. https://doi.org/10.1186/s40494-021-00505-4
N. Carmona, M.A. Villegas, P. Jiménez, J. Navarro, and M. García-Heras, "Islamic glasses from al-Andalus. Characterisation of materials from a Murcian workshop (12th century AD, Spain)," Journal of Cultural Heritage, vol. 10, pp. 439-445, 2009. https://doi.org/10.1016/j.culher.2008.12.005
J. Price, I. C. Freestone, and C. R. C. Cartwright, "‘All in a day’s work?’ The colourless cylindrical glass cups found at Stonea revisited " in Image, Craft and the Classical World. Essays in honour of Donald Bailey and Catherine Johns. Collection ‘Monogra-phies Instrumentum’ no 29., N. Crummy, Ed., Montagnac: Monique Mergoil, 2005, pp. 163-169.
I. C. Freestone, J. Price, and C. R. Cartwright, "The batch: its recognition and signifi-cance," Annales du 17e Congrès de l’Association Internationale pour l’Histoire du Verre (Antwerp, 2006), vol. 17, pp. 130-135, 2009.
I. C. Freestone, "Composition and affinities of glass from the furnaces on the Island Site, Tyre," Journal of Glass Studies, vol. 44, pp. 67-77, Jul-Sep 2002.
C. M. Swan, Th. Rehren, J. Lankton, B. Gratuze, and R. H. Brill, "Compositional obser-vations for Islamic glass from Sīrāf, Iran, in the Corning Museum of Glass collection," Journal of Archaeological Science: Reports, vol. 16, pp. 102-116, 2017. https://doi.org/10.1016/j.jasrep.2017.08.020
I.C. Freestone and L. Richards, "Technical challenges in the manufacture of opaque turquoise glass in the medieval Islamic world," in MARE VITREUM. Mélanges offers à Danièle Foy, I. Commandré, S. Fontaine, S. Fünfschilling, J. Mach, and C. Munier, Eds., Drémil-Lafage: Editions Mergoil, 2024, 233-242.
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Copyright (c) 2025 Nadine Schibille, Jorge De Juan Ares, Fabiola Monzón Moya
This work is licensed under a Creative Commons Attribution 4.0 International License.
Accepted 2025-05-19
Published 2025-06-18
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European Research Council
Grant numbers 647315