Fluid inclusions in quartz with bituminous daughter minerals, China

Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers

Agate from Reichweiler, Germany

Fluid inclusions containing mica and quartz, in aquamarine from Pakistan

Dumortierite in rock crystal, Brazil, polarised light

Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light

Fire opal, Mexico

Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania

Structure in a healing fissure in topaz from Brazil