Fluid inclusions in quartz with bituminous daughter minerals, China
Two-phase inclusions in sapphire, Sri Lanka
Colour zoning in ruby from Mong-Shu, Burma
Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania
Fire opal, Mexico
Two-Phase inclusions and rutile needles in rock crystal from Brazil
Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia
Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light

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Seehotel Wilerbad, Wilen am Sarnersee