Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania
Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania
Dumortierite in rock crystal, Brazil, polarised light
Dumortierite in rock crystal, Brazil, polarised light
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Agate from Anzi, Maroc
Agate from Anzi, Maroc
Two-phase inclusions in tourmaline from Namibia
Two-phase inclusions in tourmaline from Namibia
Partially etched diamond crystal
Partially etched diamond crystal
Agate from Reichweiler, Germany
Agate from Reichweiler, Germany
Fire opal, Mexico
Fire opal, Mexico
 
 

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