Two-phase inclusion in amethyst, Brazil

Agate from Anzi, Maroc

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

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

Fire opal, Mexico

Dendrites in agate

Inclusion of apatite in ruby from Tanzania

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