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

Midge included in amber from the Baltic coast, polarised light

Partially etched diamond crystal

Agate from Reichweiler, Germany

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

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

Inclusions of hematite in feldspar (sunstone), India

Inclusion of apatite in ruby from Tanzania

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