Inclusions of hematite in aquamarine, Tanzania
Twin-crystal of chrysoberyl
Two-phase inclusions in tourmaline from Namibia
Inclusions of fossil plant debris in opal from Wollo, Ethiopia
Spinel crystal in dolomite marble, Burma
Two-phase inclusion in amethyst, Brazil
Inclusions of hematite in feldspar (sunstone), India
Two-phase inclusions in sapphire, Sri Lanka

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