Dieter Hahn received honorary president status of the Diamond and Precious Stones Bourse Idar-Oberstein at a gala dinner celebrating the 25th anniversary of the Intergem Gem and Jewellery show held in Idar-Oberstein.
Hahn has been the treasurer of the World Federation of Diamond Bourses since 1991, and has also served as the director and president of the DEIO for 30 years.
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