Inclusion of apatite in ruby from Tanzania

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

Spinel crystal in dolomite marble, Burma

Dumortierite in rock crystal, Brazil, polarised light

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

Inclusions of hematite in feldspar (sunstone), India

Fluid inclusions containing mica and quartz, in aquamarine from Pakistan

Fire opal, Mexico

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