Agglestone Rock, UK
Rock formations, Karnataka, India
Colourful rock strata, UK
Brandwag buttress, South Africa
Limestone pavement, New Zealand
Flute marks on mudstone
Rock concretions
Glacial pothole
Red sandstone cliffs, Wales, UK
Sedimentary rock outcrop
Orange lichen on glacier polished rock
Copper salts on a rock
Araganite crystals in limestone cave
Delicate araganite structures in cave
Former limestone cave now exposed to sea
Columnar joints
Granite rock arch in mountains in Namibia
Jasper mineral rock deposits
Kimmeridge Bay, Dorset, UK
Limestone pavement
Basalt outcrop
Eroded sandstone
Beinn Alligin, Scotland
Sea stack, Wales
Limestone cave
Carboniferous limestone pavement, Malham Cove
Ute Mountain Reservation, USA
Sandstone cliffs, Corfu, Greece
Layered flysch sediments
Titanium deposits on a beach
Krizna Jama Cave, Loz Valley, Slovenia
Black Dolerite boulders in the northern cape
Tephra surface of Hunga Tonga窶滴unga Ha'apai island
Folded schists
Folded rock strata
Jurassic rock strata
Balance Rock, British Columbia
Volcanic rock cavities
Agglomerate rock, polarised LM
Folded rock strata, Patagonia
Eroded rock formation
Karst rock formation, Switzerland
Folded rock strata by a lake
Conichalcite and adamite
Marble pebbles
Green marl
Smoke and light coming through crack in lava rock, elevated view
Rock formations, Valle de la Luna, San Pedro de Atacama, El Loa Province, Antofagasta Region, Chile
Southern Alps, New Zealand
Amphibolite metamorphic rock
Sedimentary rock
Rock arch, Joshua Tree National Park, USA
Conical hill
Aa lava, Pacaya, Guatemala
Banding patterns
Moss-covered rocks
Avakas Gorge, Cyprus
Sunrise over droogs, India
Anticlinal folded rock strata
Eroded and pitted rock
Cross-bedding in sandstone rock
Sample of granite
Shelly limestone, polarised LM
Nummulitic limestone, LM
Nummulitic Limestone, LM
Polarised LM of thin section of greywacke
Salt desert patterns in Iran, satellite image
Igneous rocks near Arbatax, Sardinia, Italy
Bouma sequence in flysch
Cliffs at Handa Island, Scotland, UK
Rock formation resembling a face
Arkose, a sedimentary rock
Lizardite in serpentine rock
Massive rock gypsum
Kaolinite in rock groundmass
Polygenetic conglomerate rock
Limestone rock, close up
Chamosite in rock groundmass
Microcline in rock groundmass
Amber
Jamesonite in rock groundmass
Arkose, a sedimentary rock, Massachusetts
Cinnabar on calcite rock groundmass
Helvite crystals in rock groundmass
Clinochlore crystals in rock groundmass
Aegirine crystal in rock groundmass
Cordierite crystals in rock groundmass
Tuff rock with graded bedding
Folds of calcite in limestone rock
Short, prismatic phosgenite crystals in rock groundmass
Chert, a type of sedimentary rock
Jamesonite in rock groundmass, close-up
Basalt columns
Arid landscape
Mica Schist specimen
Serpentine Marble specimen
Talc Schist specimen
Pegmatite specimen
Pitchstone specimen
Scoria specimen
Trachyte specimen
Tuff specimen
Shale specimen
Breccia specimen
Limestone specimen
Dolomite specimen
Aquamarine gem, 3 carat
Zircon gem
Ruby
Polished Opal gemstone
Polished Opal
Antigorite, Thurman, New York, USA
Natrolite, Tyringham, Massachusetts, USA
Thomsonite specimens
Analcite, Uralberg, Austria
Quartz crystals
Tellurium, Hungary
Rhyolite, Mexico
Chrysocolla
Giant's Causeway
Appenzell Alps, Switzerland
Rio Pastaza gorge
Natural oil seep, Ecuador
Granite on Capo Testa, Sardinia, Italy
Italian medieval city on volcanic neck
Martian drilling site, Curiosity image
Duden Waterfalls, Turkey
Folded gneiss
Pedestal erratics
Pedestal erratic
Kambhorn reflected in lagoon, Iceland
Skjaldbreidur shield volcano, Iceland
Coastal landscape
Erta Ale Volcano, Ethiopia
Mountain, illustration
Coastal rock ledge at high tide
Colorful danxia
Selenite crystals on a dried lake bed
Grotta del Fico, Sardinia, Italy
Gypsum rock
The original forest
Sedimentary rock concretion
Glaucophane crystals in rock groundmass
Sandstone rock formation, South Africa
Greenland coastal landscape
Flos ferri aragonite in rock groundmass
Colorado National Monument, USA
Geological formations in Rainbow Valley, Chile
Blue Cavansite rosette in rock groundmass
Waterfall leaves sunshine mountain spring blue sky in Jilin Changbai County