Inclusions of hematite in feldspar (sunstone), India

Inclusion of apatite in ruby from Tanzania

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

Inclusions of gilalite aggregates in rock crystal from Brazil

Dumortierite in rock crystal, Brazil, polarised light

Inclusions of hematite in aquamarine, Tanzania

Partially etched diamond crystal

Agate from Reichweiler, Germany

Two-phase inclusions in tourmaline from Namibia