Technology, production and chronology of red window glass in the medieval period–rediscovery of a lost technology

JJ Kunicki-Goldfinger, IC Freestone, I McDonald… - Journal of …, 2014 - Elsevier
SEM-EDXA of 132 examples of medieval red window glass reveals the presence of around
1% copper oxide in all cases. SEM and TEM of selected samples confirm the presence of Cu …