Fluorite
Fluorite crystals
Pseudomorphic crystal growth
Fluorite and barite crystals
Purple Fluorite Crystal Gemstone
Fluorite crystals on quartz, close up
Twinned fluorite crystals
Tiger eye
Green fluorite cubic crystal twins
Orange crystal
Fluorite specimen
A specimen of fluorite
Fluorspar crystals
Azurite crystals
Carnelian agate
Quartz
Blue fluorite
Fluorite in dolomite
Cubic fluorite
Fluorite mineral
Fluorite crystal specimen
Purple fluorite crystals
Blue John specimen
Cut and polished jasper
Tourmaline
Blue lace agate
Rainbow Fluorite
Quartz monzonite
Herkimer diamonds
Fluorite, Mexico
Citrine
Fluorite crystals, Durango, Mexico
Fluorite crystals, New Mexico
Fluorite crystals, New Mexico, USA
Fluorite or Fluorspar (95% pure)
Flourite crystal, Kirlian photograph
Ruby
Jasper
Quartz boulder
Brecciated quartz
Jasper breccia rock
Asscher cut diamond gemstone
Pink diamonds
Amethyst
Fluorite crystal
Rough emerald
Blue Fluorite
Blue John vase
Hawk's Eye
Tiger's Eye
Moh's Hardness Scale
Flourite crystals
Turquoise mineral
Mineral epimorphosis II
Mineral epimorphosis I
Raw aquamarine crystal
Quartz crystals
Opal
Peridot
Siderite mineral
Cubic zirconia
Nephrite crystals
Moonstone gemstones
Titanite bearing granite
Titanite crystals in actinolite
Quartz in sphalerite
Molybdenite in quartz monzonite
Laguna agate
Moctezuma agate
Cryptocrystalline agate
Thunder egg agate
Vein agate
Chrysoprase
Mounted India dendritic agate
Colourful crystals
Mahogany obsidian
Quartz polished stone
Garnet-bearing rock
Opal gem necklace
Jade stone
Indicolite tourmaline faceted stone
Watermelon tourmaline crystalline stone
Hawk's Eye quartz stone
Tiger Eye quartz gemstone
Avanturine smooth gemstone
Beryl gem, cut stone
Schorl tourmaline crystal stone
Agate mineral rock cross section
Jasp agate stone
Jasp agate polished surface
Egyptian jasper stone
Botswana agate stones
Round agate geode
Round agate thunderegg
Two agate thundereggs
Agate slice
Botswana agate stone
Opal in its host rock
Quartz filled concretion
Amethyst filled geode
Aventurine
Opal gem and rock
Garnet crystals on schist
Tellurium in quartz
Fortification agate
Agate
Quartz encrusted calcite crystals
Topaz specimens
Pyrargyrite crystals
Amethyst geode interior
Spessartine garnet
Garnet
Garnet gemstone
Tourmaline specimen
Illustrations of Indian diamonds
Watermelon tourmaline
Topaz
Cursed amethyst
Grossular dodecahedral crystal
Elbaite mineral
Dravite mineral
Andradite mineral
Demantoid
Tourmaline crystals in quartz
Uncut diamonds
Lapis lazuli specimen
Topaz crystal in albite and microcline
Emerald crystal, close up
Imperial Jade streaked with green
Ironstone matrix with potch opal
Prismatic amethyst crystal
Olivine peridot crystal, close up
Potch opal with smooth and rough surface
Grossular garnet crystals on rock surface
Schorl and quartz crystals in groundmass
Turquoise on rock surface, close-up
Elbaite mineral (tourmaline)
Sphene crystals in groundmass, close-up
Five polished ruby gemstones
Octahedral Fluorite
Opal specimen
Axinite
Sample of chalk
Sample of limestone
Aventurine gemstone
Rough diamond
Cordierite crystal
Rutile crystals
Black tourmaline in mica schist
Native gold
Iron oxide precipitation in agate