Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania
Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania
Inclusion of apatite in ruby from Tanzania
Inclusion of apatite in ruby from Tanzania
Fire opal, Mexico
Fire opal, Mexico
Spinel crystal in dolomite marble, Burma
Spinel crystal in dolomite marble, Burma
Structure in a healing fissure in topaz from Brazil
Structure in a healing fissure in topaz from Brazil
Two-phase inclusions in sapphire, Sri Lanka
Two-phase inclusions in sapphire, Sri Lanka
Two-phase inclusion in amethyst, Brazil
Two-phase inclusion in amethyst, Brazil
Dumortierite in rock crystal, Brazil, polarised light
Dumortierite in rock crystal, Brazil, polarised light
Inclusions of hematite in feldspar (sunstone), India
Inclusions of hematite in feldspar (sunstone), India
Bubbles and swirls in moldavite (natural glass)
Bubbles and swirls in moldavite (natural glass)