Structure in a healing fissure in topaz from Brazil
Structure in a healing fissure in topaz from Brazil
Inclusions of hematite in feldspar (sunstone), India
Inclusions of hematite in feldspar (sunstone), India
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
Spinel crystal in dolomite marble, Burma
Spinel crystal in dolomite marble, Burma
«Red fox agate» from Patagonia, Argentina
«Red fox agate» from Patagonia, Argentina
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
Fire opal, Mexico
Fire opal, Mexico