Two-phase inclusions in sapphire, Sri Lanka

Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil

Inclusions of hematite in aquamarine, Tanzania

Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania

Inclusion of apatite in ruby from Tanzania

Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia

Structure in a healing fissure in topaz from Brazil

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

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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

Hong Kong Jewellery & Watch Fair

Sainte-Marie aux Mines

Tucson Gem & Jewelry Show

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