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| Last updates: | |
| 18th October 2011 | Enamel class 11 - 12 April 2012 |
| 17th October 2011 | Program of classes 2012 up date |
| 10th October 2011 | Mineralshows in Switzerland 2012 |
| 24th May 2011 | Gemstone Safari 2012 in Tanzania up date |
| 24th May 2011 | new set of Second hand tools |
| 23rd January 2011 | Gemological instruments |