Opalescent glass is a type of glass that exhibits a milky, translucent quality, often resembling the appearance of an opal gemstone. This unique effect is achieved by adding specific minerals during the glass-making process, which scatter light and create a soft, glowing appearance. It is commonly used in decorative items, lamps, and stained glass windows. The production of opalescent glass became popular in the late 19th century, particularly with the work of Louis Comfort Tiffany and other artisans. This glass can come in various colors and patterns, making it a favored choice for collectors and interior designers seeking to add a touch of elegance to their spaces.