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

Two-Phase inclusions and rutile needles in rock crystal from Brazil

Fire opal, Mexico

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

Twin-crystal of chrysoberyl

Inclusion of apatite in ruby from Tanzania

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

Agate from Reichweiler, Germany

Two-phase inclusions in tourmaline from Namibia