Tourmaline crystals on Albite
Albite with Tourmaline
Bi-coloured tourmaline crystals
Verdite green tourmaline gemstone
Tourmaline crystals
Tourmaline crystals in matrix
Tourmaline gemstone
Elbaite crystal, variety Tourmaline
Tourmaline crystals in quartz
Blue tourmaline crystals
Tourmaline
Schorl variety of Tourmaline, Namibia
Tourmaline gem
Tourmaline specimen
Watermelon tourmaline
Tourmaline pegmatite
Tourmaline Pegmatite
Quartz and green tourmaline crystals
Raw tourmaline crystal
Tourmaline gemstones and crystal
Tourmaline gem, 365 carat
Tourmaline gemstones in quartz
Indicolite tourmaline faceted stone
Watermelon tourmaline crystalline stone
Schorl tourmaline crystal stone
Elbaite mineral (tourmaline)
Pink tourmaline crystals growing on mica
Tourmaline Crystals, Minas Gerais, Brazil
Schorl, the black variety of Tourmaline
Tourmaline crystal
Tourmaline gemstones
Tourmaline quartz
Schorl and quartz crystals in groundmass
Tourmaline in quartz
Tourmaline mica in slate
Tourmaline in gneiss rock
Dravite mineral
Black tourmaline in mica schist
Green Tourmaline in Muscovite, Maine
Crystals of green toumaline and pink lepidolite
Hawk's Eye quartz stone
Elbaite mineral
Tourmaline mineral, light micrograph
Tourmaline crystals in quartzite
Rubellite Tourmaline in Lepidolite Mica
Elbaite on albite and quartz
Rubellite tourmaline pendant
Tourmaline crystal specimen
Tourmaline crystal specimens
Tourmaline embedded in feldspar rock
Opal gemstones
Single piece of blue opal
Opal mineral stone
Opal rock
Black opal gemstone
Tourmaline crystal, thin section
Black tourmaline, SEM
Blue opal gemstones
Yellow-green Tourmaline rough
Granite specimen
Opal gemstone
Graphic tourmaline, light micrograph
Cut Watermelon Tourmaline gemstone
Trillion cut tourmaline gemstone
Mylonite, light micrograph
Polarized light experiments, 1847
Granitic pegmatite
Cut green Paraiba Tourmaline gemstone
Opal
Opal gem necklace
Opal in its host rock
Opal gem and rock
Ironstone matrix with potch opal
Potch opal with smooth and rough surface
Tourmaline schorl specimen
Rubellite I
Rubellite II
Amethyst crystals
Opal specimen
Fire opal
Opal surface
Opal on bedrock
Round polished Common Opal
Topaz or Beryl crystals
Boulder opal formation
Opal specimen and cut stone
Spessartite (garnet) crystals growing on albite
電気石
紅電気石
オパール
Spessartite crystals, Monroe, Connecticut
Opal specimens
Opalised fossil
Fire Opal
Grossularite Garnet crystal
Cut green Tourmaline gemstone
Grossularite Garnet crystals, Hessonite
Uncut diamond from Africa
Mineral samples
Topaz crystal in albite and microcline
Citrine crystals
Herkimer Diamond
Yellow diamond
Tourmaline on quartz
ベージュの布上に置かれた花をモチーフにしたブローチ
Schorl (black Toutmaline)
Luxulyanite, thin section, LM
Turquoise stones
Aquamarine crystal
Topaz gemstones
Asscher cut diamond gemstone
Pink diamonds
Moonstone gemstones
Aquamarine gems
Garnet.
Citrine.
Tarquoise.
Moonstone.
Orthoclase adenoma moonstone gemstone
Topaz gemstone
Tourmaline cross section
Nephrite crystals
Pyrargyrite crystals
'Black' opal cabochon specimen
Lapis lazuli specimen
Garnet crystals on schist
Malachite mineral stone
Sapphire gemstone
Aquamarine gemstone
Tourmaline unworked stones
Fire opal birthstone
Crackle quartz
Mass of prismatic aquamarine crystals
Grossular garnet crystals on rock surface
Garnet, variety Uvarovite on diopside
Almandine
Tourmaline in pegmatite host rock
Diamond
Polished turquoise stone
Emerald gemstones