Roundels are small glass wonders which display detailed draughtsmanship and rich subject matter. They use light as the main medium for enriching an interior and are a delight to behold in any setting. Over the years I have been lucky enough to work closely with collections of these artworks and help preserve them for future generations. Netherlandish-style stained glass roundels are different from regular stained glass windows or panels. While stained glass windows usually use the whole space of the window, multiple pieces of glass and sometimes a building-wide scheme to create scenes, tell stories and depict figures within an architectural framework, roundels have a whole scene depicted on one piece…