Spinel crystal in dolomite marble, Burma
Spinel crystal in dolomite marble, Burma
Twin-crystal of chrysoberyl
Twin-crystal of chrysoberyl
Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light
Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light
Stress fissure («sun spangle») in baltic amber
Stress fissure («sun spangle») in baltic amber
Two-phase inclusion in amethyst, Brazil
Two-phase inclusion in amethyst, Brazil
Partially etched diamond crystal
Partially etched diamond crystal
Two-phase inclusions in tourmaline from Namibia
Two-phase inclusions in tourmaline from Namibia
Fluid inclusions in quartz with bituminous daughter minerals, China
Fluid inclusions in quartz with bituminous daughter minerals, China
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
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