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Schweizerische Gemmologische Gesellschaft
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Dendrites in agate
Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil
Spinel crystal in dolomite marble, Burma
Colour zoning in ruby from Mong-Shu, Burma
Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light
Stress fissure («sun spangle») in baltic amber
Fluid inclusions containing mica and quartz, in aquamarine from Pakistan
Agate from Reichweiler, Germany

Links

Associazione Italiana Gemmologi
Deutsche Gemmologische Gesellschaft
GRS GemResearch Swisslab AG
Federation of European Education in Gemmology
Gemological Institute of America GIA
Gemmological Association of Great Britain
Schule für Gestaltung Zürich
 
 
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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