Midge included in amber from the Baltic coast, polarised light

Dumortierite in rock crystal, Brazil, polarised light

Two-phase inclusions in tourmaline from Namibia

Fluid inclusions containing mica and quartz, in aquamarine from Pakistan

Agate from Anzi, Maroc

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

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

Inclusions of hematite in feldspar (sunstone), India

Twin-crystal of chrysoberyl