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Herausgeber:
Deutsche Gemmologische Gesellschaft e.V.
Prof.-Schlossmacher-Str. 1
D-55743 Idar-Oberstein
Herausgeber:
Deutsche Gemmologische Gesellschaft e.V.
Prof.-Schlossmacher-Str. 1
D-55743 Idar-Oberstein
Course DG1 + DG2
Identification of imitations, identification of synthetic and treated stones, practical grading, grading of coloured diamonds.
Fee: EUR 700.00
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