|Metal oxidation usually = darker|
|Re: NOT SAME POST AS ABOVE: FADED QING ENAMEL BEADS? -- jrj||Post Reply||Edit||Forum||Where am I?|
IIRC, lead is a large component of these enamels, just as it is in similarly-colored pottery glazes and enamels. None of these other lead glasses lighten with age.
Do you have a source for "enamel colors can oxidize and become lighter over time"?