Dendrites in agate
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Two-Phase inclusions and rutile needles in rock crystal from Brazil
Dumortierite in rock crystal, Brazil, polarised light
Agate from Reichweiler, Germany
Structure in a healing fissure in topaz from Brazil
Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania
«Red fox agate» from Patagonia, Argentina


Societé Suisse de Gemmologie
Sekretariat: Iva Pavic

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