Our news journalists obtained a quote from the research, "In particular, the enamels were made of alkali and/or alkaline earth lead-glass with a wide range of chemical compounds in the form of pigments or opacifiers. Two types of coloring mechanisms were identified, colloidal particles such as copper-ruby for red enamels, and ionic mechanisms such as Fe(II) and Co(II) to achieve a blue pigments; Mn(III) in the purple pigment; and two kind of white enamels were identified, i.e., tin oxide as an opacifier and uranium oxide."
According to the news editors, the research concluded: "In addition, we established the reason for the poor state of conservation of some of the enamels by means of the identification of depolymerization and ion exchanges, well-known harmful effects of glass weathering, and finally a chronology was assigned for some of these pieces according to the enamel composition."
For more information on this research see: A Nondestructive Methodology for the Study of Colored Enamels: Insights into Manufacturing and Weathering Processes.
Our news journalists report that additional information may be obtained by contacting
Keywords for this news article include: Spain,
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