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

Twin-crystal of chrysoberyl

Two-phase inclusions in sapphire, Sri Lanka

Dumortierite in rock crystal, Brazil, polarised light

Inclusions of hematite in feldspar (sunstone), India

Midge included in amber from the Baltic coast, polarised light

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

Agate from Anzi, Maroc

Spinel crystal in dolomite marble, Burma