Inclusions of hematite in feldspar (sunstone), India

Dumortierite in rock crystal, Brazil, polarised light

Inclusions of hematite in aquamarine, Tanzania

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

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

«Red fox agate» from Patagonia, Argentina

Fire opal, Mexico

Inclusions of fossil plant debris in opal from Wollo, Ethiopia

Agate from Reichweiler, Germany