Inclusions of fossil plant debris in opal from Wollo, Ethiopia

Fluid inclusions in quartz with bituminous daughter minerals, China

Inclusions of gilalite aggregates in rock crystal from Brazil

Partially etched diamond crystal

Two-phase inclusion in amethyst, Brazil

Dumortierite in rock crystal, Brazil, polarised light

Agate from Anzi, Maroc

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

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