Partially etched diamond crystal

Midge included in amber from the Baltic coast, polarised light

«Red fox agate» from Patagonia, Argentina

Colour zoning in ruby from Mong-Shu, Burma

Agate from Anzi, Maroc

Inclusions of gilalite aggregates in rock crystal from Brazil

Stress fissure («sun spangle») in baltic amber

Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil

Two-phase inclusions in tourmaline from Namibia