Testing institutes (4 exhibitors)
75172 Pforzheim, Germany
The DDI produces reports for diamonds/gemstones as well as further training.
55743 Idar-Oberstein, Germany
Identification, Grading, Evaluation, Research, Analysis, Training
55743 Idar-Oberstein, Germany
2018 Antwerp, Belgium
IGI is the global authority in diamond, gemstone and jewelry grading worldwide
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