Gemme vitree e paste vitree al Museo Archeologico di Verona

I s t I t u t o v e n e t o d I s c I e n z e , l e t t e r e e d a r t I at t I tomo clxxIII classe dI scIenze fIsIche, matematIche e naturalI fascicolo I clxxVII anno accademIco

Annales du 19e Congrès de l’Association Internationale pour l'Histoire du Verre (Piran 2012), Koper 2015, pp. 329-336.

MÉLANGES DE L'ÉCOLE FRANÇAISE DE ROME. MOYEN AGE, 135(2), 2023

We examine here the glass finds from the Vetricella site. This site, investigated during the ERC-Avanced nEU-Med project (www.neu-med.unisi.it ) is interpreted as the centre of the royal curtis of Valli attested in documentary sources from 937. During the excavation, a large number of glass objects dated from the 4th to the 12th centuries were unearthed. The compositions of the early mediaeval Vetricella glass vessels (beakers, goblets, bottles, amploules/vials), are studied and compared with those of similar finds from various other European sites. With the exception of one glass bottle, made with Levantine plant ash soda glass, all the other studied glasses belong to Antique or Late-Antique natron glass groups (Mn- and Sb-decolorized, Foy 2 and HIMT). All these objects illustrate the recycling practices of Antique and Late Antique glass in Europe as they are described by Theophilus for the 11th and 12th centuries.

in Coutinho I., Palomar T., Coentro S., Machado A., Vilarigues M. (eds.), Proceedings of the 5th GLASSAC International Conference on Glass Science in Art and Conservation (Caparica, Universidade Nova de Lisboa, 7th-9th June 2017), Lisboa, pp. 80-81. SBN: 978-989-99528-3-6, 2019

Twenty transparent glass fragments (colourless, yellow, azure and green hues) from Miranduolo have been analyzed by Particle Induced X-Ray Emission and Particle Induced Gamma-Ray Emission (PIXE/PIGE) The fragments are dated from mid-13 th to mid-14 th century AD, when the first Tuscan glass-making workshops emerged All the glasses are of Na-Ca-Si composition, with 6 being made with unpurified Levantine plant ash, 12 made with purified Levantine plant ash, 1 with Barilla plant ash, and 1 with natron (with high magnesium) Continental calcite has been added to the glass batch as glass stabilizer in order to make the glasses more stable and resistant to corrosion

Journal of Glass Studies, 1997

Journal of Cultural Heritage, 2005

... The obtained results allow us to gain a more exhaustive knowledge of the production technology at Germagnana (14th century) and Gambassi (16th century) and of the provenance of the employed raw materials and to register differences and analogies in their production ...

Heritage, 2023

This work reports the results of the analyses performed on a set of glass finds from the “Gaetano Chierici” collection in the Civic Museums of Reggio Emilia. Forty-eight typologically heterogeneous glass finds were included in the list of the analyzed objects, dating from the fifth century BCE to the first century CE. The objects primarily consisted of glass beads; however, bangles, pinheads, and one vessel fragment were also included in the set. The items were analyzed using noninvasive spectroscopic methods that were implemented with portable equipment on the museum’s premises. Fiber optic reflectance spectroscopy was used to identify the coloring species in the glass matrix, while X-ray fluorescence spectrometry provided compositional information. Both techniques allowed for a discussion of the mechanisms of coloring and opacification, as well as the raw materials used for this purpose. The results provided a complex picture of the various colorants used to manipulate the appearance of the glass, which was a crucial aspect in the creation of the personal adornments represented by these glass items. The data revealed evidence of different sources of raw glass and colorants. Most of the samples were colored with cobalt, but iron and copper also influenced the color of many of them. Both white and yellow were utilized for the glass decorations, and these colors were achieved with the addition of either antimony-containing crystals or tin-containing ones. This finding suggests that the transition from antimonate to stannate started as early as the second century BCE. The “Gaetano Chierici” collection contains representative objects distributed throughout the investigated period. The results obtained here are a starting point for future studies of glass technology and provenance in the area.