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