Spinel crystal in dolomite marble, Burma
Fluid inclusions in quartz with bituminous daughter minerals, China
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Inclusion of apatite in ruby from Tanzania
Partially etched diamond crystal
Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light
Stress fissure («sun spangle») in baltic amber
Two-Phase inclusions and rutile needles in rock crystal from Brazil

Objectives

The Swiss Gemmological Society has the following objectives:

  • To promote the gemmological knowledge of its members
  • To extend this knowledge through annual training and to pass on the benefits thereof to the gemstone and pearl trades in the industry
  • Protect the interest of the purchasing public
  • Maintain ethical business practices, combat unfair competition and comply with the international guidelines of the diamond, gemstone and pearl trades