Watermelon tourmaline crystalline stone
Watermelon tourmaline
Tourmaline
Tourmaline gemstone
Indicolite tourmaline faceted stone
Schorl tourmaline crystal stone
Tourmaline crystal specimen
Tourmaline crystal specimens
Verdite green tourmaline gemstone
Hawk's Eye quartz stone
Tourmaline crystals in quartz
Elbaite mineral (tourmaline)
Black tourmaline in mica schist
Opal gem necklace
Elbaite mineral
Dravite mineral
Schorl and quartz crystals in groundmass
Rubellite tourmaline pendant
Tourmaline crystals in quartzite
Tourmaline embedded in feldspar rock
Tourmaline crystal
Tourmaline quartz
Tourmaline Pegmatite
Tourmaline gemstones in quartz
Crystals of green toumaline and pink lepidolite
Raw tourmaline crystal
Tourmaline gemstones and crystal
Tourmaline in quartz
Tourmaline in gneiss rock
Graphic tourmaline, light micrograph
Elbaite on albite and quartz
Tourmaline specimen
Bi-coloured tourmaline crystals
Citrine
Jade stone
Garnet crystals on schist
Pyrargyrite crystals
Tourmaline crystal, thin section
Tourmaline schorl specimen
Opal
Fire opal
Ironstone matrix with potch opal
Amethyst
Blue sapphire stone
Blue Sapphire uncut stone
Amethyst geode
Opal mineral stone
Opal rock
Black opal gemstone
Quartz
Quartz polished stone
Tiger Eye quartz gemstone
Avanturine smooth gemstone
Egyptian jasper stone
Botswana agate stones
Round agate geode
Round agate thunderegg
Two agate thundereggs
Agate slice
Blue lace agate
Botswana agate stone
Quartz filled concretion
Opalised fossil
Tourmaline on quartz
Tourmaline gem
Tourmaline crystals
Tourmaline gemstones
Tourmaline pegmatite
Ruby
Amethyst geodes
Tourmaline cross section
Tourmaline gem, 365 carat
Tourmaline crystals in matrix
Elbaite crystal, variety Tourmaline
Albite with Tourmaline
Tourmaline crystals on Albite
Tourmaline mica in slate
Blue tourmaline crystals
Tourmaline unworked stones
Schorl variety of Tourmaline, Namibia
Quartz and green tourmaline crystals
Pink tourmaline crystals growing on mica
Tourmaline in pegmatite host rock
Fuchsite mineral stone
'Black' opal cabochon specimen
Mineral samples
Cut Watermelon Tourmaline gemstone
Tourmaline mineral, light micrograph
Yellow-green Tourmaline rough
Granite specimen
Mylonite, light micrograph
Tourmaline Crystals, Minas Gerais, Brazil
Green Tourmaline in Muscovite, Maine
Schorl, the black variety of Tourmaline
Rough pinkish-red Rubellite
Turritella agate
Carnelian gemstone
Garnet crystal and rock
Yellow Jasper
Leopardskin jasper stone
Peridot
Trillion cut tourmaline gemstone
Tiger eye
Black tourmaline, SEM
Cut green Paraiba Tourmaline gemstone
Rubellite Tourmaline in Lepidolite Mica
紅電気石
Crystalline limestone rock
Quartz crystals
Quartz crystal
Andradite crystals
Almandine mineral sample
Olivine mineral sample
Nephrite crystals
Topaz crystals
Pyrope sand
Garnet gemstone
Amethyst filled geode
Topaz specimens
Grossular crystals in host rock
Rough emeralds
Almandine crystals in schist
Amethyst geode interior
Spessartine garnet
Grossular dodecahedral crystal
Andradite mineral
Demantoid
Uncut diamonds
Peridotite
Garnet in peridotite
Amethyst and chalcedony
Topaz crystal in albite and microcline
Emerald crystal, close up
Prismatic amethyst crystal
Olivine peridot crystal, close up
Grossular garnet crystals on rock surface
Spotted Jasper stone
Rutilated quartz
Twinned staurolite crystals
電気石
Opal in its host rock
Opal gem and rock
Opal on bedrock
Potch opal with smooth and rough surface
Assortment of Gemstones
Schorl (black Toutmaline)
Opal gemstones
Blue opal gemstones
Single piece of blue opal
Uncut diamond
Garnets in micaschist, light micrograph
Tremolite crystals