Quartz crystals
Quartz vein
Quartz crystal from Sentis, Switzerland.
Tourmaline crystals in quartz
Smoky quartz crystals
Galenite and quartz crystals
Chabazite crystals in quartz
Orthoclase and quartz crystals
Quartz
Quartz encrusted calcite crystals
Smoky quartz
Quartz mineral
Rose quartz mineral, artwork
Citrine crystals
Amethyst crystals
Molybdenite in quartz monzonite
Zeolite in quartz
Pyrolusite in quartz
Tellurium in quartz
Hessite in quartz
Native gold on quartz
Quartz polished stone
Tiger Eye quartz gemstone
Quartz filled concretion
Crystals of haematite in quartz
Amethyst crystals, light micrograph
Cuprocassiterite in quartz mica schist
Geologist studying a quartz vein
Geologist logging a quartz vein
Hawk's Eye quartz stone
Quartz crystal
Colourful crystals
Magnetite in quartz
Quartz in sphalerite
Emerald crystal in quartz
Emerald in quartz
Dendritic crystals in chalcedony
Quartz vein in granite
Mica in quartz, light micrograph
Quartzite metamorphic rock
Geode interior
Iron oxide precipitation in agate
Dyed agate slice
Amethyst stone
Chiastolite stone
Amethyst filled geode
Agate Bridge at Petrified Forest, Arizona
Cut and polished agate
Amethyst and chalcedony
Egyptian jasper stone
Round agate geode
Round agate thunderegg
Two agate thundereggs
Agate slice
Blue lace agate
Botswana agate stone
Quartz and cassiterite crystals
Native gold
Siderite mineral
Pseudomorphic crystal growth
Prasiolite mineral
Beryl gem, cut stone
Petrified Forest National Park, Arizona
Silica rock crystal samples
Glacial sand deposit
Graphic granite rock
Granite
Avanturine smooth gemstone
Schorl tourmaline crystal stone
Green Avanturine Quartz gemstone
Milky Quartz gemstone
Quartz crystals, SEM
Smokey Quartz gemstone
Herkimer diamonds of quartz mineral
Quartz monzonite
Quartz boulder
Brecciated quartz
Crackle quartz
Deformed quartz veins in slate
Specimen of rose quartz from Brazil
Celestite crystals
Chalcopyrite and quartz crystals
Fluorite crystals on quartz, close up
Schorl and quartz crystals in groundmass
Raw citrine crystal
Agate geode
Pyromorphite specimen
Siderite specimen
Agate mineral rock cross section
Jasp agate stone
Jasp agate polished surface
Moss Agate stone
Banded Amethyst stone
Amethyst
Beryl stone
Calcite crystal
Calcite
Chalcopyrite
Garnet gemstone
Jasper polished stone
Amethyst geode interior
A specimen of quartz
Botswana agate stones
Labradorite rock crystals
Citrine
Geode interior section
Quartz mineral stone
Tourmaline quartz
Quartz crystal mineral
Quartz crystal cluster
Tourmaline in quartz
Iron dendrites in agate
Aragonite crystals
Jasper
Agate
Banded texture in agate
Jasper breccia rock
Rhyolitic geode
Geode in thin section
Slice of agate
Amethyst geode
Synthetic quartz
Herkimer diamonds
Quartzite rocks
Quartzite rocks covered in lichens
Tiger's eye mineral, light micrgraph
Mylonite, light micrograph
Mica inclusion
Sand
Quartz types
Hyacinth quartz
Malachite
Rutilated quartz