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Schweizerische Gemmologische Gesellschaft
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Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania
Agate from Reichweiler, Germany
Two-Phase inclusions and rutile needles in rock crystal from Brazil
Bubbles and swirls in moldavite (natural glass)
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Spinel crystal in dolomite marble, Burma
Two-phase inclusions in sapphire, Sri Lanka
Inclusions of gilalite aggregates in rock crystal from Brazil

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