Schorl, the black variety of Tourmaline
Schorl variety of Tourmaline, Namibia
Verdite green tourmaline gemstone
Schorl tourmaline crystal stone
Tourmaline Crystals, Minas Gerais, Brazil
Tourmaline crystals
Tourmaline gemstone
Elbaite crystal, variety Tourmaline
Bi-coloured tourmaline crystals
Tourmaline crystals in matrix
Tourmaline
Tourmaline specimen
Albite with Tourmaline
Tourmaline crystals on Albite
Tourmaline embedded in feldspar rock
Raw tourmaline crystal
Tourmaline gemstones and crystal
Tourmaline crystals in quartz
Elbaite mineral (tourmaline)
Green Tourmaline in Muscovite, Maine
Rubellite Tourmaline in Lepidolite Mica
Schorl and quartz crystals in groundmass
Tourmaline gem
Watermelon tourmaline
Tourmaline pegmatite
Tourmaline Pegmatite
Tourmaline gem, 365 carat
Tourmaline gemstones in quartz
Indicolite tourmaline faceted stone
Watermelon tourmaline crystalline stone
Blue tourmaline crystals
Tourmaline crystal specimen
Tourmaline crystal specimens
Tourmaline crystal
Tourmaline gemstones
Tourmaline quartz
Tourmaline in quartz
Tourmaline mineral, light micrograph
Tourmaline mica in slate
Tourmaline in gneiss rock
Black tourmaline in mica schist
Quartz and green tourmaline crystals
Pink tourmaline crystals growing on mica
Rubellite tourmaline pendant
Black tourmaline, SEM
Tourmaline schorl specimen
Hawk's Eye quartz stone
Elbaite mineral
Dravite mineral
Yellow-green Tourmaline rough
Tourmaline crystal, thin section
Tourmaline crystals in quartzite
Elbaite on albite and quartz
Crystals of green toumaline and pink lepidolite
Granite specimen
Cut Watermelon Tourmaline gemstone
Trillion cut tourmaline gemstone
Cut green Paraiba Tourmaline gemstone
Graphic tourmaline, light micrograph
Opal gemstones
Single piece of blue opal
Opal mineral stone
Opal rock
Black opal gemstone
Opal specimen
Mylonite, light micrograph
Blue opal gemstones
Opal specimens
Cut green Tourmaline gemstone
Opal gemstone
Polarized light experiments, 1847
Granitic pegmatite
Tourmaline on quartz
Tourmaline cross section
Opal
Opal gem necklace
Opal in its host rock
Boulder opal formation
Opal gem and rock
Opal specimen and cut stone
Ironstone matrix with potch opal
Potch opal with smooth and rough surface
Tourmaline unworked stones
電気石
Schorl (black Toutmaline)
紅電気石
Rubellite I
Rubellite II
Rough pinkish-red Rubellite
Fire opal
Opalised fossil
Opal surface
Opal on bedrock
Fire Opal
Round polished Common Opal
'Black' opal cabochon specimen
Mineral samples
Topaz or Beryl crystals
オパール
Garnet, variety Uvarovite on diopside
Mineral properties, 18th century
Cut Fire Opal gemstone
Fire opal birthstone
Aquamarine gems
Garnet.
Tarquoise.
Moonstone.
Amethyst crystals
Spessartite crystals, Monroe, Connecticut
Cut Indicolite gemstone
Uncut diamond from Africa
Topaz
Almandine
Beryl crystal
Quartz variation, Herkimer Diamonds
Tourmaline in pegmatite host rock
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
Luxulyanite, thin section, LM
Citrine.
Orthoclase adenoma moonstone gemstone
Topaz gemstone
Aquamarine crystal, variety Beryl
Diamonds
Topaz gemstones
Emerald gemstones
Turquoise stones
Malachite mineral stone
Sapphire gemstone
Aquamarine gemstone
Moonstone gemstones
Peridot gemstones
Aquamarine crystal
Asscher cut diamond gemstone
Pink diamonds
Quartz variety Citrine
Yellow diamond
Grossularite Garnet crystal
Rubies and sapphire
Garnet, variety Androdite
Citrine
Diamond
Polished turquoise stone
Turquoise gemstones