Verre églomisé is an ancient technique of coating the reverse of a piece of glass with gold or silver leaf, etching patterns into it, sometimes adding color, to create vibrant, reflective images. Artisans from many ancient cultures have used gold as a medium and as a color in precious works of art. Since Roman times, glassware has been decorated with gold leaf. Most of the glass gilding is in the Museums of Europe and America. In 19th Century England, window painting utilized glass gilding in a technique known as "reverse painting" in which the gold leaf and oil paint appear together. But historically, there is no evidence of glass gilding as a dedicated art form until Phyllis Parun reintroduced this beautiful medium in a contemporary context.