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