Stress fissure («sun spangle») in baltic amber

Inclusions of hematite in feldspar (sunstone), India

Fire opal, Mexico

Two-Phase inclusions and rutile needles in rock crystal from Brazil

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

Two-phase inclusion in amethyst, Brazil

Fluid inclusions containing mica and quartz, in aquamarine from Pakistan

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

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