Silver wire, mine specimen
Cave of Swords, Naica Mine, Mexico
Manganosite
Haematite mineral rock
Native copper
Banded iron formation
Diamond processing, Siberia, Russia
Quartz crystal cluster
Twinned staurolite crystals
Gypsum crystal group
Cave of Crystals, Naica Mine, Mexico
Galena
Chrysocolla
Venetia Diamond Mine, South Africa
Zebraite
Magnetite and calcite
Pseudomorphic crystal growth
Calcite spherulites
Cobalt calcite mineral sample
Berzeliite mineral
Iron pyrite crystals
Marcasite.
Azurite crystals
Aragonite crystals
Amethyst
Blue lace agate
Citrine
Quartz
Ruby
Quartz polished stone
Unakite mineral stone
Zeolite crystal
Hope Chrysoberyl gemstone
Blue sapphire stone
Blue Sapphire uncut stone
Crystalline limestone rock
Basaltic dyke rock
Opal gem necklace
Jade stone
Indicolite tourmaline faceted stone
Watermelon tourmaline crystalline stone
Hawk's Eye quartz stone
Tiger Eye quartz gemstone
Avanturine smooth gemstone
Schorl tourmaline crystal stone
Jasp agate cabuchon
Moss agate marble pattern
Cross section of hollow agate
Cross section of jasp agate
Cross section of agate
Agate polished cross section
Agate polished stone pattern
Mocha agate with veined pattern
Agate with round centre
Egyptian jasper stone
Brecciated Agate stone
Agate cross section and layers
Agate stone cross section
Agate stone cross section and patterns
Flame agate stone pattern
Agate stone patterns
Botswana agate stones
Round agate geode
Round agate thunderegg
Two agate thundereggs
Turritella agate
Agate slice
Botswana agate stone
Amethyst geode
Amethyst geodes
Desert rose mineral clusters
Dolomite mineral
Carnelian gemstone
Fuchsite mineral stone
Garnet crystal and rock
Gypsum stone
Haematite group of stones
Haematite tumblestone polished stone
Yellow Jasper
Leopardskin jasper stone
Quartz filled concretion
Garnet crystals on schist
Pyrargyrite crystals
Chromite
Fluorspar crystals
Galenite cubes
Entrance to Naica Mine crystal caves
Copper mine mill, Arizona, USA
Malachite, SEM
Mineral exploration drilling, Kenya
Diamond drill bit
Mining core samples, Kenya
Mining core sample, Kenya
Sulphur rocks
Orange crystal
Siderite and calcite
Dioptase
Silver crystals in calcite
Bauxite
Spotted Jasper stone
Rutilated quartz
Haematite mineral specimen
Taconite processing plant, USA
Diamond miners, South Africa
Sample of basalt
Sample of limestone
Sample of chalk
Calcite crystals
Copper Ore
Siderite, and iron ore
Brochantite
Uraninite in calcite
Tourmaline gemstone
Diamond mine slag heaps
Dendritic mineralisations in chalcedony
Desert rose of gypsum crystals
Agate objects
Brown monticellite
Mineral samples
Prehnite and calcite in groundmass
Magnesite crystals in groundmass
Franklinitein calcite groundmass
Scalenohedral calcite, close-up