Inclusion of apatite in ruby from Tanzania

Dendrites in agate

Two-phase inclusion in amethyst, Brazil

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

Inclusions of hematite in feldspar (sunstone), India

Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil

Partially etched diamond crystal

Midge included in amber from the Baltic coast, polarised light

Bubbles and swirls in moldavite (natural glass)