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