Geode interior
Agate geode
Geode interior section
Amethyst filled geode
Round agate geode
Rhyolitic geode
Amethyst geode
Iron oxide precipitation in agate
Agate mineral rock cross section
Jasp agate stone
Jasp agate polished surface
Dyed agate slice
Moss Agate stone
Amethyst stone
Banded Amethyst stone
Amethyst
Beryl stone
Chalcopyrite
Chiastolite stone
Garnet gemstone
Jasper polished stone
Agate Bridge at Petrified Forest, Arizona
Cut and polished agate
Egyptian jasper stone
Botswana agate stones
Round agate thunderegg
Two agate thundereggs
Agate slice
Blue lace agate
Botswana agate stone
Green calcite crystal
Celestite crystals
Agate
Banded texture in agate
Calcite crystal
Calcite
Cut agates
Slice of agate
Cabuchon gemstones of jasper
Amethyst geode interior
Iron dendrites in agate
Geode in thin section
Dendritic crystals in chalcedony
Amethyst and chalcedony
Quartz crystals
Quartz filled geode
Agate thunderegg
Agate surface
Kyanite crystal
Labradorite rock crystals
Fuchsite mineral stone
Agate stone cross section and patterns
Flame agate stone pattern
Agate stone patterns
Three calcite crystals
Cross-section slice of Brazilian agate
Quartz vein
Quartz crystal from Sentis, Switzerland.
Chrysocolla specimen
Amber citrine quartz stone
Laguna agate
Moctezuma agate
Agua Nueva agate
Cryptocrystalline agate
Thunder egg agate
Fortification agate
Cut agate
Mineral precipitate in agate
Concentric banding in agate
Slice of dyed agate
Azurite copper ore stone
Agate lava geode
Aragonite crystals
Brecciated Jasper stone
Fire agate
Turritella agate
Amethyst geodes
Carnelian gemstone
Garnet crystal and rock
Yellow Jasper
Leopardskin jasper stone
Smoky quartz
Citrine crystals
Quartz crystal
Quartz mineral
Tourmaline crystals in quartz
Geode, thin section micrograph
Raw citrine crystal
Quartzite metamorphic rock
Pyromorphite specimen
Siderite specimen
Smoky quartz crystals
Rose quartz mineral, artwork
Amethyst crystals, light micrograph
Amethyst crystals
Opal gem necklace
Jade stone
Amethyst crystals in an agate geode
Agate. polarised light micrograph
Agate, artificially coloured
Spotted Jasper stone
Mounted India dendritic agate
Sard Onyx layered Agate
Brecciated Agate stone
Large quartz geode
Blue sapphire stone
Blue Sapphire uncut stone
Polished Esterel rhyolite agate
Polished carnelian stone
Red jasper mineral
Dendritic precipitation in an agate
Herkimer diamonds of quartz mineral
Green Avanturine Quartz gemstone
Milky Quartz gemstone
Jasper
Specimen of rose quartz from Brazil
Jasper breccia rock
Quartz mineral stone
Quartz polished stone
Smokey Quartz gemstone
Star sapphire stone
Vein agate
Chrysoprase