Opal
Opal mineral stone
Opal rock
Black opal gemstone
Opal gem necklace
Opal gemstones
Blue opal gemstones
Single piece of blue opal
Fire opal birthstone
Opal gem and rock
Opal in its host rock
Ironstone matrix with potch opal
Potch opal with smooth and rough surface
Boulder opal formation
Opal specimen and cut stone
Fire opal
Opal on bedrock
Opal specimen
Round polished Common Opal
Indicolite tourmaline faceted stone
Watermelon tourmaline crystalline stone
Hawk's Eye quartz stone
Schorl tourmaline crystal stone
Opal gemstone
Opal birthstone
Opal specimens
'Black' opal cabochon specimen
Opal surface
Tourmaline gemstone
Opalised fossil
Mineral samples
Tourmaline gemstones in quartz
オパール
Fire Opal
蛋白石
Cut Fire Opal gemstone
Tiger eye
Citrine
Three pieces of blue opal
Peridot
Jade stone
Garnet crystals on schist
Pyrargyrite crystals
A cut and polished fire opal
Slice through fossilised wood revealing opal
Tourmaline specimen
Elbaite mineral
Blue sapphire stone
Blue Sapphire uncut stone
Tourmaline
Watermelon tourmaline
Dravite mineral
Tourmaline crystals in quartz
Schorl and quartz crystals in groundmass
Elbaite mineral (tourmaline)
Assortment of Gemstones
Carnelian agate
Cut and polished jasper
Botswana agate stones
Agate slice
Blue lace agate
Bi-coloured tourmaline crystals
Verdite green tourmaline gemstone
Black tourmaline in mica schist
Hawk's Eye
Tiger's Eye
Amethyst
Amethyst geode
Jasper
Quartz
Quartz polished stone
Tiger Eye quartz gemstone
Avanturine smooth gemstone
Egyptian jasper stone
Round agate geode
Round agate thunderegg
Two agate thundereggs
Botswana agate stone
Quartz filled concretion
Malachite mineral stone
Topaz gemstone
Sapphire gemstone
Aquamarine gemstone
Quartz mineral stone
Ruby
Amethyst geodes
Aventurine gemstone
Fuchsite mineral stone
Rubellite tourmaline pendant
Elbaite on albite and quartz
Tourmaline embedded in feldspar rock
Asscher cut diamond gemstone
Pink diamonds
Tourmaline gem, 365 carat
Blue tourmaline crystals
Star sapphire stone
Smokey Quartz gemstone
Sand
Turquoise stone
紅電気石
Alexandrite stone
Three calcite crystals
Limburgite
Granite specimen
Tourmaline crystal specimen
Tourmaline crystal specimens
電気石
Raw tourmaline crystal
Tourmaline gemstones and crystal
Tourmaline gem
Tourmaline crystals in matrix
Elbaite crystal, variety Tourmaline
Schorl variety of Tourmaline, Namibia
Tourmaline crystals
Albite with Tourmaline
Tourmaline crystals on Albite
Tourmaline pegmatite
Tourmaline Pegmatite
Tourmaline crystal
Pink tourmaline crystals growing on mica
Quartz and green tourmaline crystals
Crystals of green toumaline and pink lepidolite
Turritella agate
Carnelian gemstone
Garnet crystal and rock
Yellow Jasper
Cut agate
Pyrite mineral stone
Sodalite stone
Sulphur mineral crystal
Tiger eye gemstone
Azurite copper ore stone
Amethyst geode interior
Garnet
Lapis lazuli specimen
Imperial Jade streaked with green
Prismatic amethyst crystal
Olivine peridot crystal, close up
Grossular garnet crystals on rock surface
Five polished ruby gemstones
Agate stone cross section and patterns
Flame agate stone pattern
Agate stone patterns
Snowflake obsidian
Tourmaline crystals in quartzite
Mylonite, light micrograph
Tourmaline in quartz
Tourmaline mica in slate
Tourmaline in gneiss rock
Tourmaline gemstones
Tourmaline quartz
Quartz monzonite
Herkimer diamonds
Leopardskin jasper stone
Yellow-green Tourmaline rough
Quartz crystals