Concentric banding in agate
Agate
Laguna agate
Agate geode
Agate slice
Agua Nueva agate
Moss Agate stone
Botswana agate stones
Blue lace agate
Dyed agate slice
Banded texture in agate
Moctezuma agate
Cryptocrystalline agate
Fortification agate
Thunder egg agate
Jasp agate stone
Jasp agate polished surface
Cut and polished agate
Round agate geode
Round agate thunderegg
Two agate thundereggs
Botswana agate stone
Iron oxide precipitation in agate
Agate mineral rock cross section
Green calcite crystal
Banded Amethyst stone
Amethyst
Beryl stone
Chalcopyrite
Garnet gemstone
Jasper polished stone
Agate surface
Celestite crystals
Amethyst stone
Chiastolite stone
Amethyst filled geode
Egyptian jasper stone
Agate thunderegg
Carnelian agate
Mounted India dendritic agate
Calcite crystal
Calcite
Flame agate stone pattern
Agate stone patterns
Cut agate
Agate stone cross section and patterns
Vein agate
Agate in amethyst
Three calcite crystals
Mineral precipitate in agate
Slice of dyed agate
Agate Bridge at Petrified Forest, Arizona
Turritella agate
Cabuchon gemstones of jasper
Amethyst geode
Jasper
Jasper breccia rock
Plume agate
Condor agate
Chrysocolla specimen
Amber citrine quartz stone
Geode interior
Azurite copper ore stone
Agate, artificially coloured
Sweet home agate
Slice of agate
Chrysoprase
Amethyst and chalcedony
Kyanite crystal
Fuchsite mineral stone
Polished Esterel rhyolite agate
Sard Onyx layered Agate
Brecciated Agate stone
Fire agate
Iris agate
Fairburn agate
Lysite agate
Moss agate
Pompon agate
Antelope agate
Coyamito agate
Sagenitic agate
Omineca agate
Crater agate
Queensland agate
Iron dendrites in agate
Agate. polarised light micrograph
Dendritic precipitation in an agate
Union road agate
Lake Superior agate
Paint rock agate
Paul Bunyon plume agate
Siam Siding agate
Regency rose agate
Priday plume agate
Bubble lace agate
Montana moss agate
Frieda thunder egg agate
Ocean jasper agate
Fourth of July Butte agate
Blue Bed thunder egg agate
Succor Creek thunder egg agate
Labradorite rock crystals
Brecciated Jasper stone
Carnelian gemstone
Garnet crystal and rock
Yellow Jasper
A polished sample of agate
Geode interior section
Agatised coral
Quartz monzonite
Quartz boulder
Brecciated quartz
Herkimer diamonds
Cut agates
Rhyolitic geode
Agate, polarised light micrograph
Amethyst crystals in an agate geode
Amethyst geode interior
Cut and polished jasper
Aragonite crystals
Amethyst geodes
Leopardskin jasper stone
Dendrites in agate
Polished slice of agate
Coloured slices of agate
Agate, variety of mineral quartz
Slice of agate, a form of quartz
Spotted Jasper stone
Oregon Beach agates
Cross section of blue agate, a type of chalcedony
Slice of agate, a chalcedony form of quartz