Ruby Stained glass is basically decorated pattern glass. It was popular from the 1890's to the late 1920's here in the U.S. The glass was coated with a chemical solution containing copper sulfide and baked in a kiln, turning the coating bright red. Sometimes entire sets of dinnerware were "flashed/stained", occasionally with touches of gold. Ruby Flash also became a popular souvenir glass sold at fairs and train stations.

This ruby stained souvenir punch cup, circa early 1900's, was made as a souvenir item for "Glenwood Minn" which is hand etched into the flashed upper portion of the cup. The pattern of the pressed glass piece is "Beaded Arches" and was produced by the Duncan Miller Glass Company from 1897-1920. The cup measures 3" across the top and 2" in height. There are no cracks, chips or repairs; some scratches on the interior near the top edge.