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

Inclusion of apatite in ruby from Tanzania

Agate from Anzi, Maroc

Two-phase inclusions in tourmaline from Namibia

Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia

Inclusions of fossil plant debris in opal from Wollo, Ethiopia

Inclusions of hematite in feldspar (sunstone), India

Agate from Reichweiler, Germany

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