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Schweizerische Gemmologische Gesellschaft
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Dumortierite in rock crystal, Brazil, polarised light
Fire opal, Mexico
Natural etching structure on a crystal face of diamond (trigons), polarised light
Colour zoning in ruby from Mong-Shu, Burma
Partially etched diamond crystal
Midge included in amber from the Baltic coast, polarised light
Stress fissure («sun spangle») in baltic amber
Two-phase inclusion in amethyst, Brazil

Links

Associazione Italiana Gemmologi
Deutsche Gemmologische Gesellschaft
Federation of European Education in Gemmology
Gemological Institute of America GIA
Gemmological Association of Great Britain
 
 
The World Jewellery Confederation CIBJO
Zentralverband Schweizerischer Goldschmiede und Uhrenfachgeschäfte VSGU
 
 
Gübelin Gem Lab
Gübelin Akademie
Schweizerisches Gemmologisches Institut SSEF
 
 
Goldor Magazin für Edelmetalle, Schmuck, Uhren und Edelsteine
Portal der Uhren- und Schmuckbranche
 
 
Baselworld
Hong Kong Jewellery & Watch Fair
Sainte-Marie aux Mines
Tucson Gem & Jewelry Show
 
 
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© SGG/SSG 2020

 

Our sponsors for 2019:

 
 
 
 
System Eickhorst
 
 
FAERBER
 
 
FERRARI
 
 
System Eickhorst
 
 
GRS
 
 
GÜBELIN
 
 
SSEF
 
 
Wild & Petsch
 
 
 
 
Christian Dunaigre
 
 
 
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