Opal gem necklace
Opal
Opal rock
Opal mineral stone
Black opal gemstone
Blue sapphire stone
Blue Sapphire uncut stone
Jade stone
Amethyst geode
Fire opal
'Black' opal cabochon specimen
Ironstone matrix with potch opal
Hawk's Eye quartz stone
Schorl tourmaline crystal stone
Amethyst geodes
Egyptian jasper stone
Botswana agate stones
Round agate geode
Round agate thunderegg
Two agate thundereggs
Agate slice
Blue lace agate
Botswana agate stone
Opalised fossil
Mineral samples
Indicolite tourmaline faceted stone
Watermelon tourmaline crystalline stone
Amethyst
Opal gem and rock
Turritella agate
Carnelian gemstone
Fuchsite mineral stone
Garnet crystal and rock
Yellow Jasper
Leopardskin jasper stone
Elbaite on albite and quartz
Schorl and quartz crystals in groundmass
Fire Opal
Tourmaline gemstone
Opal gemstones
Opal specimen
Blue opal gemstones
Citrine
Opal gemstone
Single piece of blue opal
Spotted Jasper stone
Boulder opal formation
Opal on bedrock
Garnet gemstone
Amethyst filled geode
Amethyst and chalcedony
Opal in its host rock
Opal specimen and cut stone
Unakite mineral stone
Zeolite crystal
Hope Chrysoberyl gemstone
Crystalline limestone rock
Basaltic dyke rock
Jasp agate cabuchon
Moss agate marble pattern
Cross section of hollow agate
Cross section of jasp agate
Cross section of agate
Agate polished cross section
Agate polished stone pattern
Mocha agate with veined pattern
Agate with round centre
Agate cross section and layers
Agate stone cross section
Agate stone cross section and patterns
Flame agate stone pattern
Agate stone patterns
Dolomite mineral
Gypsum stone
Potch opal with smooth and rough surface
Opal specimens
Tourmaline crystals in quartz
Ruby
Garnet crystals on schist
Pyrargyrite crystals
Tourmaline gemstones in quartz
Limburgite
Quartz
Quartz polished stone
Tiger Eye quartz gemstone
Avanturine smooth gemstone
Quartz filled concretion
Brecciated Agate stone
Desert rose mineral clusters
Haematite mineral rock
Tourmaline in quartz
Tourmaline quartz
Carnelian agate
Round polished Common Opal
Cut Fire Opal gemstone
Fire opal birthstone
Geode, thin section micrograph
Black tourmaline in mica schist
Tourmaline
Rubellite tourmaline pendant
Tourmaline crystals in quartzite
Tourmaline crystal specimen
Tourmaline crystal specimens
Watermelon tourmaline
Elbaite mineral
Dravite mineral
Tourmaline embedded in feldspar rock
Elbaite mineral (tourmaline)
Iron oxide precipitation in agate
Agate mineral rock cross section
Jasp agate stone
Jasp agate polished surface
Cabuchon gemstones of jasper
Dyed agate slice
Moss Agate stone
Amethyst stone
Banded Amethyst stone
Beryl stone
Chalcopyrite
Chiastolite stone
Jasper polished stone
Cut and polished agate
Agate geode
Three calcite crystals
Rutilated quartz
Opal surface
Amethyst geode interior
Prismatic amethyst crystal
Star sapphire stone
Quartz crystals
Quartz crystal
Graphic tourmaline, light micrograph
Concentric banding in agate
Aragonite crystals
Calcite crystal
Calcite
Brecciated Jasper stone
Kyanite crystal
Labradorite rock crystals
Fire agate
Assortment of Gemstones
Carnelia
leopard skin
Dendritic mineralisations in chalcedony
Agate objects
Carnelian
Sard Onyx layered Agate
Opal birthstone
Amethyst crystals