Inclusions of hematite in feldspar (sunstone), India

Stress fissure («sun spangle») in baltic amber

Two-phase inclusions in tourmaline from Namibia

Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light

Inclusions of hematite in aquamarine, Tanzania

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

Dumortierite in rock crystal, Brazil, polarised light

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

Midge included in amber from the Baltic coast, polarised light