Spinel crystal in dolomite marble, Burma

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

Dumortierite in rock crystal, Brazil, polarised light

Inclusions of hematite in feldspar (sunstone), India

Inclusions of fossil plant debris in opal from Wollo, Ethiopia

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

Partially etched diamond crystal

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

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