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

Structure in a healing fissure in topaz from Brazil

Two-phase inclusions in tourmaline from Namibia

Midge included in amber from the Baltic coast, polarised light

Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil

Two-phase inclusions in sapphire, Sri Lanka

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

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

«Red fox agate» from Patagonia, Argentina