Cryptocrystalline quartz
Blue lace agate
Agate
Assortment of Gemstones
Carnelia
leopard skin
Three calcite crystals
Sard Onyx layered Agate
Brecciated Agate stone
Flame agate stone pattern
Agate stone patterns
Agate stone cross section and patterns
Carnelian
メノウ
拾ったメノウ石
Moss agate
Agate lava geode
Agate thunderegg
Agate surface
Agate, artificially coloured
Polished Esterel rhyolite agate
Agate slice
Carnelian.
オニキス
Botryoidal chalcedony, close-up
Iris agate
Condor agate
Fairburn agate
Lysite agate
Bubble lace agate
Lake Superior agate
Coyamito agate
Agatised coral
Sagenitic agate
Polished slice of agate
Siam Siding agate
Cross section of blue agate, a type of chalcedony
Succor Creek thunder egg agate
Ocean jasper agate
Polished agates
Regency rose agate
Antelope agate
Omineca agate
Priday plume agate
Blue Bed thunder egg agate
Orbicular jasper
Crater agate
Sweet home agate
Slice of agate, a form of quartz
Pompon agate
Iron mineralization in agate
Oregon Beach agates
Coloured slices of agate
Fourth of July Butte agate
Petrified wood
Jasper
Frieda thunder egg agate
Plume agate
Queensland agate
1888 colour lithograph of minerals
Montana moss agate
Paul Bunyon plume agate
Mineral precipitates in agate
Sweetwater agates
Paint rock agate
Cut and polished piece of bloodstone
Union road agate
Banded calcite \Onyx\" II"
Carnelian scaraboid seal
瑪瑙
玉髄
Chalcedony crystals
Moss agate slice
Quartz filled geode
Large quartz geode
Mexican Onyx, California, USA
Tiger's-eye variety of Chalcedony, Africa
Chalcedony
Chrysoprase
Jasper, a form of chalcedony, close-up
Chryosprase, a form of chalcedony
Onyx
Agate mineral rock cross section
Botswana Agate
Agate geode
Thunder egg agate
Geode interior
Cut agate
Moss Agate stone
Fire or MexicAgate
Agua Nueva agate
Agate stone with round whorls
Agate stone with white layers
Brecciated agate
Agate silica crystals in stone
Fortification agate
Fossilised tropical wood turned into Jasper
Moctezuma agate
Rhyolitic geode
Mounted India dendritic agate
Agate cabuchon stone
Agate bowl
Banded texture in agate
Moss agate marble pattern
Slice of agate, a chalcedony form of quartz
Concentric banding in agate
A polished sample of agate
Mineral precipitate in agate
Agate cross section
Laguna agate
Amethyst crystals in an agate geode
Lace agate stone
Triangular agate stone
Cut and polished agate
Polished pebble of a fossil fern stem
Cross section of agate stone
Section of quartz crystal geode
Haematite mineral rock
Hollow agate with crystal
Fluorite crystal specimen
Agate stone with layers of colour
Brecciated agate rock
Vein agate
Banded calcite \Onyx\" I"
Mineral precipitation in agate
Jasper mineral rock deposits
Carnelian pebble
Amethyst stone
Cryptocrystalline agate
Agate in amethyst
Dyed agate slice
Chalcopyrite
Amber citrine quartz stone
Chrysocolla specimen
Celestite crystals
Green calcite crystal