Tiara Glass was marketed by Tiara Exclusives of Dunkirk, Indiana, USA through home-parties held by sales agents, between 1970 and 1998. The offices of Tiara Exclusives were adjacent to the Indiana Glass Company, and both companies belonged to the Lancaster Colony Corporation. Indiana Glass made a very large volume of the glassware for Tiara. Before and after the closure of the Indiana Glass hand shop (in 1989), Tiara glass was also made by other glassworks including Fenton Art Glass and L.E.Smith.
They produced a wide variety of handmade and machine-made glassware, mostly to a high standard, and including some reproductions or re-issues of patterns originally made by Indiana Glass and other companies during the depression years. These re-issues used the same moulds for patterns such as Avocado and Sandwich. Apart from paper labels, they were not marked "Tiara," even though there were some differences in color.
Of the Tiara Exclusives patterns and colors that have a lively collector following, the Sandwich pattern seems to be one of the most popular. Indiana Glass Company produced Sandwich pattern Depression glass during the1920s. During approximately the same time period, the elegant glass company Duncan & Miller produced a similar Sandwich pattern. Most of the Depression-era Indiana Glass molds and some Duncan & Miller molds were put into use during the 1970s -1990s to produce Tiara Sandwich glass.
