Twin-crystal of chrysoberyl
Agate from Reichweiler, Germany
Inclusion of apatite in ruby from Tanzania
Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil
Dumortierite in rock crystal, Brazil, polarised light
Inclusions of hematite in aquamarine, Tanzania
Inclusions of hematite in feldspar (sunstone), India
Inclusions of fossil plant debris in opal from Wollo, Ethiopia

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