Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light
Inclusions of gilalite aggregates in rock crystal from Brazil
Fire opal, Mexico
Agate from Reichweiler, Germany
Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Colour zoning in ruby from Mong-Shu, Burma
Inclusions of hematite in feldspar (sunstone), India

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