What other light related words are more emotionnaly connoted than those ? Furtive or fragile lights and shadows so easy to use in metaphors, and therefore,
so readily used expression with glass in a place where light and mood can vary so much between seasons.
Passé, futur, présent - (Past, future, present)
Fused glass layers with inclusions and frit on top. Diamond disc engraved and chiselled back.