Twin-crystal of chrysoberyl
Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania
Two-phase inclusion in amethyst, Brazil
Two-phase inclusions in tourmaline from Namibia
Two-phase inclusions in sapphire, Sri Lanka
Fluid inclusions containing mica and quartz, in aquamarine from Pakistan
Dumortierite in rock crystal, Brazil, polarised light
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers

About us

In 1942, a group of jewellery and gemstone specialists, led by Prof. Dr. Eduard Gübelin, founded the Swiss Gemmological Society with the aim of promoting the gemmological knowledge of its members and keeping them informed by means of further education annually.

The Swiss Gemmological Society provides the professional training and further education of its members, by means of a two-day central conference annually, which is further supplemented by two-day regional seminars, later in the year.

Professionals from the gemstone, jewellery and watch industries, gemmological laboratories and other interested parties can become members of the Swiss Gemmological Society.

The Society is Divided into 7 Regional Groups:

  • Suisse Romands, next regional course : Saturday 26 September 2026
  • Bern, next regional course : Tuesday 27 October 2026
  • Basel-Solothurn-Aargau and Central Switzerland, next regional course : Monday 19 October 2026
  • Zurich, next regional course : Friday 25 September and Tuesday 28 September 2026
  • East Switzerland / Liechtenstein, next regional course: Monday 19 November 2026
  • Ticino, next regional course : Saturday 21 November 2026

Each regional group is represented by a regional leader who organises the regional seminars and provides interested parties with information on the society.

For further information please contact us: nfgmmlgch.