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