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