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Petit glass canton ohio9/20/2023 ![]() ![]() The compilation of data comprised analysis of main and trace elemental composition of vessel glasses and of the vitreous paint layers by Micro-XRF. Starting from a technological case study of fragments of Roman enamelled beakers from Lübsow (Lubieszewo, Poland) the question was raised whether enamels made for decorating thin glass vessels had to meet other demands than those vitreous masses used on metals or as independent materials. At the archaeometry lab in Mainz a research-programme was set up to study the manufacturing technique of Roman enamelled glassware. While other materials have been investigated in some depth, enamel decoration on glass vessels has attired much less attention. Glass vessels, tesserae, beads and enamels applied to different carrier materials were decorated with or entirely made from opacified glasses. Opaque glasses were widely used for decorative purposes in antiquity. Technically, it is fully consistent with current understanding of glass production in Venice in the late fifteenth century. Careful macroscopic and microscopic observations are combined with the chemical analyses to outline a comprehensive chaîne opératoire for the object. The conservation history and the processes employed to conserve the object prior to its redisplay in the new Waddesdon Gallery at the British Museum in 2015 are described. ![]() This contribution locates the object in the context of Venetian glass of the Renaissance as well as the history of collecting. Further analyses were carried out on the enamels and blue glass knop of the goblet using surface X-ray fluorescence. These ragments were analysed using scanning electron microscopy with energy dispersive X-ray spectrometry and by laser ablation inductively coupled plasma mass spectrometry. Conservation treatment in 1994 provided the opportunity to remove a small sample containing some opaque white as well as rare turquoise glass. A Venetian enamelled and gilded goblet (WB.55) is part of the collection bequeathed to the British Museum by Baron Ferdinand Rothschild in 1898. ![]()
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