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Schweizerische Gemmologische Gesellschaft
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Spinel crystal in dolomite marble, Burma
Bubbles and swirls in moldavite (natural glass)
Dumortierite in rock crystal, Brazil, polarised light
Agate from Anzi, Maroc
Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania
Fluid inclusions in quartz with bituminous daughter minerals, China
Two-Phase inclusions and rutile needles in rock crystal from Brazil
Agate from Reichweiler, Germany

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  • Gemmology
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