A geometric language of forms, influenced by Cubism and the aesthetic of the machine, coloured plastic and chromium are synonymous with the Art D,co costume jewellery which was so popular in 1920s and 1930s Europe. Formerly classified by specialists as 'French jewellery', these Art D,co jewellery objects were actually made at the Jakob Bengel Chain and Bijouterie Wares Factory, founded in Idar-Oberstein in 1873! The jewellery produced by Bengel between 1931 and 1938 is distinguished by that of other makers by extraordinarily powerful innovation and a high degree of individuality. A mix of materials consisting of the coloured plastic Galalith and chromium-plated metal is handled with a playfully light touch. Bengel jewellery was exported world-wide. More than two hundred and fifty pieces of Bengel jewellery are superbly reproduced and described in this monograph on the firm.