Slice of agate
Cut agates
Geode interior
Geode interior section
Geode in thin section
Rhyolitic geode
Polished Esterel rhyolite agate
Amethyst crystals
Agate, artificially coloured
Agate
Agate slice
Agate surface
Agate geode
Jasp agate stone
Jasp agate polished surface
Botswana agate stones
Round agate geode
Round agate thunderegg
Two agate thundereggs
Blue lace agate
Botswana agate stone
Dyed agate slice
Moss Agate stone
Cut and polished agate
Iron oxide precipitation in agate
Agate mineral rock cross section
Agate Bridge at Petrified Forest, Arizona
Fire agate
Cabuchon gemstones of jasper
Egyptian jasper stone
Amethyst geode
Amethyst stone
Banded Amethyst stone
Amethyst
Beryl stone
Chalcopyrite
Chiastolite stone
Garnet gemstone
Jasper polished stone
Amethyst filled geode
Banded texture in agate
Turritella agate
Iron dendrites in agate
Cross-section slice of Brazilian agate
Concentric banding in agate
Aragonite crystals
Garnet crystal and rock
Brecciated Jasper stone
Yellow Jasper
Kyanite crystal
Labradorite rock crystals
Agate lava geode
Agate. polarised light micrograph
Green calcite crystal
Celestite crystals
Agate thunderegg
Amethyst geodes
Calcite crystal
Calcite
Carnelian gemstone
Fuchsite mineral stone
Leopardskin jasper stone
Flame agate stone pattern
Agate stone patterns
Quartz crystals
Dendritic precipitation in an agate
Agate stone cross section and patterns
Geode, thin section micrograph
Tourmaline crystals in quartz
Dendritic crystals in chalcedony
Amethyst and chalcedony
Quartz filled geode
Cut agate
Laguna agate
Moctezuma agate
Cryptocrystalline agate
Fortification agate
Slice of dyed agate
Agua Nueva agate
Thunder egg agate
Mineral precipitate in agate
Spotted Jasper stone
Smoky quartz
Citrine crystals
Quartz crystal
Quartz mineral
Three calcite crystals
Brecciated agate
Moss agate
Brecciated agate rock
Lace agate stone
Agate cross section
Jasp agate cabuchon
Moss agate marble pattern
Cross section of agate
Agate polished cross section
Agate cabuchon stone
Triangular agate stone
Agate polished stone pattern
Hollow agate with crystal
Agate with round centre
Brecciated Agate stone
Agate stone cross section
Agate stone with round whorls
Agate silica crystals in stone
Cross section of agate stone
Cross section of hollow agate
Cross section of jasp agate
Agate stone with white layers
Mocha agate with veined pattern
Agate cross section and layers
Sard Onyx layered Agate
Mounted India dendritic agate
Agate stone with layers of colour
Raw citrine crystal
Azurite copper ore stone
Chrysocolla specimen