Dieter Hahn received honorary president status of the Diamond and Precious Stones Bourse Idar-Oberstein (DEIO) at a gala dinner celebrating the 25th anniversary of the Intergem gem and jewellery show held in Idar-Oberstein.

Jochen Muller, president of the DEIO, presented the award explaining, "Hahn has been a part of the bourse since 1973 and then went on to become the president in 1988. During this time he was involved in all areas of both the local as well as international diamond industry and contributed immensely to our unique business." Hahn is the also treasurer of the World Federation of Diamond Bourses (WFDB) since 1991, and has served as the director and president of the DEIO for 30 years.

"His service was outstanding and tireless through his participation in various trade bodies, such as the WFDB, International Diamond Manufacturers Association (IDMA), Idar-Oberstein Trade Fair, the Inhorgenta Fair, and the German Gemstone Museum and the German Gemmological Association. For his efforts we believe that the honorary president is a fitting award."