Inclusions of hematite in feldspar (sunstone), India

Two-phase inclusions in tourmaline from Namibia

Two-phase inclusion in amethyst, Brazil

Inclusions of hematite in aquamarine, Tanzania

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

Fire opal, Mexico

Inclusion of apatite in ruby from Tanzania

Twin-crystal of chrysoberyl

«Red fox agate» from Patagonia, Argentina