German Foundation For Gemstone Research (DSEF)
Address: Prof.-Schlossmacher-Str. 1 D-55743 Idar-Oberstein Germany
P.O. Box 12 22 60 D-55714 Idar-Oberstein Germany
Tel +49-6781-5084-0 Fax +49-6781-508419
Email: info@gemcertificate.com Home: www.dsef.de
Director: Dr. Claudio C. Milisenda
responsible for contents: Dr. Claudio C. Milisenda
register court: Idar-Oberstein
TVA ID-No. DE 149890921
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