Giving back

to the Umba miners and Kigwasi mining village.

Background information
The Gemstone Safari is an educational field trip for visitors from abroad. During our numerous visits to the Umba river mining area, we noticed the miner's demand for more information and education about the gemstone trade. Encouraging the guests and the miners to share their know-how was the first step. Somehow, it was not sufficient. A more structured approach was needed.

Educating the miners about the gemstone trade. The way of gemstone, from the mine into finished jewelry. Covering: geology, mineralogy, gemology, gemstone cutting and jewelry manufacturing. The program is structured to offer miners additional skills and add value to their professional expertise.

  • Mineral identification
  • Mineral quality assessment
  • Proper handling of mineral specimens.
  • Gem cutting

Trough lectures in Swahili and practical workshops with Tanzanian instructors. The classes are organized during the Gemstone Safari visits.
        Workshops :

  • Cabochon cutting   class duration half a day
  • Faceting                  class duration 1 day
  • Practical gemology class duration half a day

        Lectures :

  • Geology of Tanzania
  • Geology & Mineral Resources of Tanzania
  • Gem identification
  • Gemological instruments
  • Field gemmology
  • Grading facet rough
  • A jeweler and a watch maker in Switzerland

Class instructors
I would like to acknowledge the following persons for their generous contribution in time and know-how.
          Nakara S.E. Matemu - Geologist / Mineralogist / Gemologist. Professional qualifications
          Noreen Masaki - Lapidary / Gemologist. Professional qualifications
          Paul Makunda - Lapidary. Professional qualifications
          Setiel Masaki - Lapidary.

Nakara S.E. Matemu

Noreen Masaki

Paul Makunda

Setiel Masaki

The miners of Umba river mining area and the Kigwasi village.
2016 Attendance: Cabochon class 28 miners where invited.
2017 Attendance: Faceting class 7 miners where invited.
2018 Attendance: Faceting class 4 miners
                             Cabochon class 16 miners
                             Practical gemology 32 miners.

I would like to acknowledge the following persons for their generous contribution.
          Najim Z. Msenga of Najim Company Limited
          Max Zubler
          Bea Pfister
          Heidi Pfister
          Claude Schauerte
          Beatrice Oesch
          Alfred Zenger
          Hans Peter Ubbe
          Martin Späth
          Ria Marie Antoinette Borst
          Michael Pfister
          Christine Paulus
          Sigmar Paulus
          Monika Dürr
          Bertram Biesinger
          and last but not least Adelmo Venturelli

Lapidary machines and gemological intruments
on loan during classes by Noreen Masaki

Income and expenditures
Account sheet available upon request. January 2012 - 2018

For further information please contact:
Miss Noreen Masaki                         or
Lapidary Training Centre
P. O. Box 19668
Dar es Salaam
+255 787 721 761
Mr. Hubert Heldner
Free Form Artists
Avenue des Alpes 70
CH-1820 Montreux
+41 21 963 89 77

Gemstone Safari
Minerals & Gems
Lapidary Training Centre
Giving Back

© Copyright on all photos by Hubert Heldner