I've assisted with a gem operation in Namibia that started back in
1999. Even though Namibia is a producing country - especially for
Tourmaline, Aquamarine and some rare Garnets - it is not known for
lapidary or gem cutting. If you email me privately, I can place you
in contact with two gentleman who may be willing to assist you while
in the country. One is based in Windhoek, the other is in Omaruru.