Twin-crystal of chrysoberyl

Inclusions of hematite in feldspar (sunstone), India

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

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

Inclusions of gilalite aggregates in rock crystal from Brazil

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

Inclusions of hematite in aquamarine, Tanzania

Fire opal, Mexico

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