Dendrites in agate

Two-Phase inclusions and rutile needles in rock crystal from Brazil

Fire opal, Mexico

Inclusion of apatite in ruby from Tanzania

Midge included in amber from the Baltic coast, polarised light

Inclusions of hematite in aquamarine, Tanzania

Two-phase inclusion in amethyst, Brazil

Inclusions of fossil plant debris in opal from Wollo, Ethiopia

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