Inclusion of apatite in ruby from Tanzania
Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania
Partially etched diamond crystal
«Red fox agate» from Patagonia, Argentina
Midge included in amber from the Baltic coast, polarised light
Dendrites in agate
Two-phase inclusion in amethyst, Brazil
Natural etching structure on a crystal face of diamond (trigons), polarised light

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