Fostoria Topaz Open Jam / Jelly Bowl – New Garland Etch – Diadem 02 Monday Apr 2018 Posted by d.b. in Fostoria ≈ Leave a Comment TagsColored Glass, Coloured Glass, Diadem, Jam Bowl, New Garland, Plate Etch, Topaz Glass, Yellow Glass This pretty round topaz plate etched bowl was produced by Fostoria from 1930-1933. The etch is #284 New Garland and the shape is line #2430 Diadem. The base has pretty geometric detailing.