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

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

Fire opal, Mexico

Partially etched diamond crystal

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

Structure in a healing fissure in topaz from Brazil

Dumortierite in rock crystal, Brazil, polarised light

Two-phase inclusions in tourmaline from Namibia

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