Inclusions of gilalite aggregates in rock crystal from Brazil
Fluid inclusions in quartz with bituminous daughter minerals, China
Spinel crystal in dolomite marble, Burma
Dendrites in agate
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
Partially etched diamond crystal

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Schweizerische Gemmologische Gesellschaft
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