Beryl gem, cut stone
Emerald crystal in quartz
Emerald in quartz
Beryl stone
Citrine gemstones and crystal
Cut and polished agate
Prismatic beryl crystal
Iron oxide precipitation in agate
Smoky quartz crystals
Amethyst
Rose quartz mineral, artwork
Agate mineral rock cross section
Jasp agate stone
Jasp agate polished surface
Cabuchon gemstones of jasper
Egyptian jasper stone
Botswana agate stones
Round agate geode
Round agate thunderegg
Two agate thundereggs
Turritella agate
Agate slice
Blue lace agate
Botswana agate stone
Dyed agate slice
Moss Agate stone
Amethyst geode
Amethyst geodes
Amethyst stone
Banded Amethyst stone
Aragonite crystals
Calcite crystal
Calcite
Chalcopyrite
Chiastolite stone
Carnelian gemstone
Fuchsite mineral stone
Garnet gemstone
Garnet crystal and rock
Jasper polished stone
Brecciated Jasper stone
Yellow Jasper
Kyanite crystal
Labradorite rock crystals
Leopardskin jasper stone
Amethyst filled geode
Amethyst crystals
Agate geode
Amethyst geode interior
Amethyst and chalcedony
Fire agate
Citrine
Quartz
Mica in quartz, light micrograph
Native gold
Quartz crystals
Tourmaline crystals in quartz
Crystals of haematite in quartz
Chalcopyrite and quartz crystals
Magnetite in quartz
Cuprocassiterite in quartz mica schist
Siderite mineral
Pseudomorphic crystal growth
Quartz in sphalerite
Molybdenite in quartz monzonite
Galenite and quartz crystals
Colourful crystals
Prasiolite mineral
Zeolite in quartz
Pyrolusite in quartz
Quartz polished stone
Hawk's Eye quartz stone
Tiger Eye quartz gemstone
Avanturine smooth gemstone
Schorl tourmaline crystal stone
Quartz filled concretion
Tellurium in quartz
Hessite in quartz
Quartz vein in granite
Chabazite crystals in quartz
Native gold on quartz
Quartz encrusted calcite crystals
Silica rock crystal samples
Orthoclase and quartz crystals
Glacial sand deposit
Graphic granite rock
Granite
Deformed quartz veins in slate
Quartz vein
Quartz crystal from Sentis, Switzerland.
Opal gem necklace
Spotted Jasper stone
Quartz types
Agate. polarised light micrograph
Hyacinth quartz
Quartz mineral stone, light micrograph
Rutilated quartz
Raw aquamarine crystal
Rough emeralds
Emeralds
Emerald crystal, close up
Beryl crystals
Citrine gemstone
Blue rectangular gemstone
Cassiterite crystal
Quartz and cassiterite crystals
Sylvanite crystals
Jasper
Jasper breccia rock
Cut agates
Quartz monzonite
Quartz boulder
Brecciated quartz
Herkimer diamonds
Cut and polished jasper
Beryl in rock groundmass, close-up
Citrine gemstones
Aquamarine and muscovite
Concentric banding in agate
Geode, thin section micrograph
Blue sapphire stone
Blue Sapphire uncut stone
Jade stone
Prismatic amethyst crystal
Heat-treated amethyst
Elbaite on albite and quartz
Schorl and quartz crystals in groundmass
Cut diamond
Aquamarine gemstones and crystal
Quartz crystal
Raw citrine crystal
Quartzite metamorphic rock
Smoky quartz
Citrine crystals
Geode interior
Rhyolitic geode
Geode interior section