Aragonite crystals
Labradorite rock crystals
Botswana agate stone
Garnet crystal and rock
Jasper polished stone
Brecciated Jasper stone
Yellow Jasper
Kyanite crystal
Fire agate
Carnelian gemstone
Spotted Jasper stone
Desert rose mineral clusters
Agate
Iron oxide precipitation in agate
Agate mineral rock cross section
Jasp agate stone
Jasp agate polished surface
Cabuchon gemstones of jasper
Egyptian jasper stone
Botswana agate stones
Round agate geode
Round agate thunderegg
Two agate thundereggs
Turritella agate
Agate slice
Blue lace agate
Dyed agate slice
Moss Agate stone
Amethyst geode
Amethyst geodes
Amethyst stone
Banded Amethyst stone
Amethyst
Beryl stone
Calcite crystal
Calcite
Chalcopyrite
Chiastolite stone
Fuchsite mineral stone
Garnet gemstone
Leopardskin jasper stone
Cut and polished agate
Amethyst filled geode
Agate geode
Copper
Agate. polarised light micrograph
Cut agates
Geode interior
Rhyolitic geode
Geode interior section
Slice of agate
Concentric banding in agate
Chalcedony
Agate Bridge at Petrified Forest, Arizona
Iron dendrites in agate
Amethyst and chalcedony
Amethyst crystals
Celestite crystals
Quartz crystals
Tourmaline crystals in quartz
Dendritic crystals in chalcedony
Geode in thin section
Cross-section slice of Brazilian agate
Smoky quartz crystals
Geode, thin section micrograph
Colourful crystals
Green calcite crystal
Banded texture in agate
Chalcopyrite and quartz crystals
Galenite and quartz crystals
Chabazite crystals in quartz
Quartz encrusted calcite crystals
Orthoclase and quartz crystals
Agate silica crystals in stone
Crystals of haematite in quartz
Laguna agate
Moctezuma agate
Agua Nueva agate
Cryptocrystalline agate
Thunder egg agate
Fortification agate
Quartz vein in granite
Three calcite crystals
Agate surface
Quartz crystals, SEM
Rose quartz mineral, artwork
Amethyst geode interior
Sylvanite crystals
Blue sapphire stone
Blue Sapphire uncut stone
Opal gem necklace
Jade stone
Agate lava geode
Quartz filled geode
Quartz vein
Quartz crystal from Sentis, Switzerland.
Mineral precipitation in agate
Brecciated agate
Brecciated agate rock
Agate stone with round whorls
Cross section of agate stone
Agate stone patterns
Lace agate stone
Agate cross section
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 cabuchon stone
Triangular agate stone
Agate polished stone pattern
Hollow agate with crystal
Agate stone with white layers
Agate stone with layers of colour
Fire or MexicAgate
Mocha agate with veined pattern
Agate with round centre
Agate thunderegg
Brecciated Agate stone