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This paper discusses some preliminary results regarding raw materials used in ancient glass mosaictesserae. The studied glass tesserae were recovered during the archeological excavation ofthe mosaics at the Christian basilicas in Byllis, Lin and Elbasan, which according to the archeologistswere built between the end of Vth and beginning of VIth century AD. In the recent years, severalstudies are performed on opaque coloured glass but in Albania only few studies are performedin this field. These samples are analyzed using optical microscopy and micro X-ray fluorescence.Optical microscopy is used to analyse the microstructure of the glass tesserae. The main elementsand trace elements are determined qualitatively from measurements performed with micro X-rayfluorescence. The glass matrix resulted to be very heterogeneous with too many inclusions dispersedon it. Several elements which are responsible for the color and opacity of glass tesserae aredetermined. Comparisons are made between the same colors of glass tesserae from different archaeologicalsites.

journal of materials science and chemical engineering

Preliminary Informative Results on Glass Tesserae from V&amp;lt;sup&amp;gt;th&amp;lt;/sup&amp;gt;-VI&amp;lt;sup&amp;gt;th&amp;lt;/sup&amp;gt; Century AD Mosaics in Albania