Minerals inclusions:
Inclusions are an impressive thing, witnessing the story of the grown of a crystal. Most of them are millions years old, and forever trapped inside the crystaline structure.

Hydrocarbon inclusion in Quartz under short wave UV. Madagascar

Hematite inclusion in Amethyst. Namibia.

Petroleum in Quartz with three-phase inclusion. Madagscar.

dioptase, shattuckite inclusion in Quartz. Namibia.

Mica inclusion in Quartz. Madagascar.

Lily pad inclusion in Peridot. Pakistan.

Hematite inclusion in Sunstone. Unkwnown locality.

Pyrite Inclusion in Calcite. La Sambre quarry, Landelies, Belgium.

Celadonite inclusion in Heulandite. India.

hematite inclusion in feldspar (commonly called sunstone). Specimen from China.