Inclusion of apatite in ruby from Tanzania
Agate from Anzi, Maroc
Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania
Partially etched diamond crystal
Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia
Inclusions of hematite in aquamarine, Tanzania
Inclusions of gilalite aggregates in rock crystal from Brazil
Natural etching structure on a crystal face of diamond (trigons), polarised light

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