Two-phase inclusions in sapphire, Sri Lanka

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

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

Partially etched diamond crystal

Agate from Anzi, Maroc

Inclusions of gilalite aggregates in rock crystal from Brazil

Bubbles and swirls in moldavite (natural glass)

Dendrites in agate

Two-phase inclusion in amethyst, Brazil