Might need to get some agate slabs at the next gem show! Artist Polke Sigmar's Agate Stone Windows designed for the Grossmünster in Zurich. Sigmar produced 7 cathedral windows made from translucent Agate found around the world.
Peacocks and Peonies I, John La Farge, Smithsonian American Art Museum. La Farge pioneered the use of opalescent glass for leaded glass windows. This window and its mate, Peacocks and Peonies II, were once installed in a Gilded Age home in Boston.