Partially etched diamond crystal
Two-Phase inclusions and rutile needles in rock crystal from Brazil
Agate from Reichweiler, Germany
Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil
Inclusions of fossil plant debris in opal from Wollo, Ethiopia
Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light
Structure in a healing fissure in topaz from Brazil
Inclusions of gilalite aggregates in rock crystal from Brazil

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Societé Suisse de Gemmologie
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