Two-phase inclusions in tourmaline from Namibia
Two-phase inclusions in tourmaline from Namibia
Spinel crystal in dolomite marble, Burma
Spinel crystal in dolomite marble, Burma
Partially etched diamond crystal
Partially etched diamond crystal
Structure in a healing fissure in topaz from Brazil
Structure in a healing fissure in topaz from Brazil
Stress fissure («sun spangle») in baltic amber
Stress fissure («sun spangle») in baltic amber
Agate from Reichweiler, Germany
Agate from Reichweiler, Germany
Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia
Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia
Fire opal, Mexico
Fire opal, Mexico
Inclusions of gilalite aggregates in rock crystal from Brazil
Inclusions of gilalite aggregates in rock crystal from Brazil
Agate from Anzi, Maroc
Agate from Anzi, Maroc