Two-phase inclusions in tourmaline from Namibia
Two-phase inclusions in tourmaline from Namibia
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Inclusions of hematite in aquamarine, Tanzania
Inclusions of hematite in aquamarine, Tanzania
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
Dendrites in agate
Dendrites in agate
Stress fissure («sun spangle») in baltic amber
Stress fissure («sun spangle») in baltic amber
Fluid inclusions in quartz with bituminous daughter minerals, China
Fluid inclusions in quartz with bituminous daughter minerals, China
Midge included in amber from the Baltic coast, polarised light
Midge included in amber from the Baltic coast, polarised light
Dumortierite in rock crystal, Brazil, polarised light
Dumortierite in rock crystal, Brazil, polarised light
Fire opal, Mexico
Fire opal, Mexico