Bubbles and swirls in moldavite (natural glass)

Inclusions of gilalite aggregates in rock crystal from Brazil

Two-phase inclusions in sapphire, Sri Lanka

Spinel crystal in dolomite marble, Burma

Dendrites in agate

Colour zoning in ruby from Mong-Shu, Burma

Partially etched diamond crystal

Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers

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