Inclusions of hematite in aquamarine, Tanzania
Inclusions of hematite in aquamarine, Tanzania
Twin-crystal of chrysoberyl
Twin-crystal of chrysoberyl
Agate from Reichweiler, Germany
Agate from Reichweiler, Germany
Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light
Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light
Two-Phase inclusions and rutile needles in rock crystal from Brazil
Two-Phase inclusions and rutile needles in rock crystal from Brazil
Colour zoning in ruby from Mong-Shu, Burma
Colour zoning in ruby from Mong-Shu, Burma
Natural etching structure on a crystal face of diamond (trigons), polarised light
Natural etching structure on a crystal face of diamond (trigons), polarised light
Agate from Anzi, Maroc
Agate from Anzi, Maroc
 
 

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Società Gemmologica Svizzera
Segretariato : Antoinette Starkey
T. +41 22 735 22 66
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