This design is based on an old Spirograph drawing. The mosaic measures 15" on a 19" glass round. Tabletop incorporates stained glass mosaic pieces and cut shapes in bright colors affixed to the tabletop with Weldbond. The black grout realy makes the colors pop. The mosaic is edged with brass ball chain affixed with E-6000 glue and the grout is sealed so it can be used outdoors.