Fire opal, Mexico
Spinel crystal in dolomite marble, Burma
Inclusions of hematite in feldspar (sunstone), India
Agate from Reichweiler, Germany
Structure in a healing fissure in topaz from Brazil
Two-Phase inclusions and rutile needles in rock crystal from Brazil
Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia
Inclusion of apatite in ruby from Tanzania

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