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

Inclusions of hematite in aquamarine, Tanzania

Bubbles and swirls in moldavite (natural glass)

Dendrites in agate

Midge included in amber from the Baltic coast, polarised light

Agate from Anzi, Maroc

Dumortierite in rock crystal, Brazil, polarised light

Spinel crystal in dolomite marble, Burma

Fluid inclusions in quartz with bituminous daughter minerals, China