Dumortierite in rock crystal, Brazil, polarised light

Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania

Dendrites in agate

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

Spinel crystal in dolomite marble, Burma

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

Two-phase inclusion in amethyst, Brazil