Tourmaline
Watermelon tourmaline
Tourmaline crystals in quartz
Indicolite tourmaline faceted stone
Watermelon tourmaline crystalline stone
Schorl tourmaline crystal stone
Elbaite mineral (tourmaline)
Black tourmaline in mica schist
Tourmaline gemstone
Schorl and quartz crystals in groundmass
Dravite mineral
Hawk's Eye quartz stone
Elbaite mineral
Tourmaline Pegmatite
Tourmaline crystal specimen
Tourmaline crystal specimens
Tourmaline quartz
Verdite green tourmaline gemstone
Raw tourmaline crystal
Tourmaline gemstones and crystal
Tourmaline in quartz
Tourmaline in gneiss rock
Rubellite tourmaline pendant
Tourmaline crystals in quartzite
Tourmaline embedded in feldspar rock
Tourmaline crystal
Tourmaline specimen
Graphic tourmaline, light micrograph
Bi-coloured tourmaline crystals
Elbaite on albite and quartz
Ironstone matrix with potch opal
Opal gem necklace
Tourmaline schorl specimen
Fire opal
Tourmaline crystal, thin section
Tourmaline gem
Tourmaline crystals
Tourmaline pegmatite
Tourmaline crystals in matrix
Elbaite crystal, variety Tourmaline
Albite with Tourmaline
Tourmaline crystals on Albite
Schorl variety of Tourmaline, Namibia
Tourmaline gemstones
Opalised fossil
Tourmaline gem, 365 carat
Blue tourmaline crystals
Tourmaline gemstones in quartz
Tourmaline mica in slate
Tourmaline Crystals, Minas Gerais, Brazil
Green Tourmaline in Muscovite, Maine
Tourmaline on quartz
Mineral samples
Quartz and green tourmaline crystals
Tourmaline unworked stones
'Black' opal cabochon specimen
Pink tourmaline crystals growing on mica
Tourmaline mineral, light micrograph
Yellow-green Tourmaline rough
Granite specimen
Tourmaline in pegmatite host rock
Schorl, the black variety of Tourmaline
Tourmaline cross section
Opal
Trillion cut tourmaline gemstone
Mylonite, light micrograph
Topaz crystal in albite and microcline
Emerald crystal, close up
Nephrite crystals
Amethyst filled geode
Topaz specimens
Spessartine garnet
Andradite mineral
Demantoid
Uncut diamonds
Jade stone
Garnet crystals on schist
Pyrargyrite crystals
Cut green Paraiba Tourmaline gemstone
Potch opal with smooth and rough surface
Opal in its host rock
Opal gem and rock
Rough pinkish-red Rubellite
Rubellite Tourmaline in Lepidolite Mica
Crystals of green toumaline and pink lepidolite
Opal gemstones
Single piece of blue opal
Prismatic amethyst crystal
Olivine peridot crystal, close up
Grossular garnet crystals on rock surface
Amethyst geode interior
Grossular dodecahedral crystal
Citrine
Cut Watermelon Tourmaline gemstone
Andradite crystals
Almandine mineral sample
Olivine mineral sample
Topaz crystals
Pyrope sand
Grossular crystals in host rock
Rough emeralds
Almandine crystals in schist
Peridotite
Garnet in peridotite
Amethyst and chalcedony
Opal rock
Black opal gemstone
Opal on bedrock
Amethyst
Tremolite crystals
Clinochlore with garnets
Black tourmaline, SEM
Blue sapphire stone
Blue Sapphire uncut stone
Garnet gemstone
Opal mineral stone
Uncut diamond
Ruby crystal and gems
Pallasite meteorite
Boulder opal formation
Opal specimen and cut stone
Schorl (black Toutmaline)
Heat-treated amethyst
Amethyst geode
Cut green Tourmaline gemstone
Blue opal gemstones
Sphene crystals in groundmass, close-up
Quartz
Quartz crystals
Siderite mineral
Titanite bearing granite
Pseudomorphic crystal growth
Molybdenite in quartz monzonite
Colourful crystals
Beryl gem, cut stone
Tellurium in quartz
Quartz polished stone
Tiger Eye quartz gemstone
Avanturine smooth gemstone
Egyptian jasper stone
Round agate geode
Round agate thunderegg
Two agate thundereggs
Agate slice
Blue lace agate
Botswana agate stone
Quartz filled concretion
Emeralds
Asscher cut diamond gemstone
Pink diamonds
Opal gemstone
First laser