Inclusions of hematite in feldspar (sunstone), India

Colour zoning in ruby from Mong-Shu, Burma

Structure in a healing fissure in topaz from Brazil

Inclusions of hematite in aquamarine, Tanzania

Agate from Anzi, Maroc

Fluid inclusions containing mica and quartz, in aquamarine from Pakistan

Dumortierite in rock crystal, Brazil, polarised light

Inclusions of gilalite aggregates in rock crystal from Brazil

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